ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT

Exhibit 99.12a

EXECUTION VERSION

ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT

THIS ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT (this “Assignment”), dated of November 1, 2007, is entered into among Xxxxxx Xxxxxxx Capital I Inc., a Delaware corporation (the “Depositor”), Xxxxxx Xxxxxxx Mortgage Capital Holdings LLC, successor by merger to Xxxxxx Xxxxxxx Mortgage Capital Inc. (“MSMCH”), IndyMac Bank, F.S.B., as seller (in such capacity, the “Seller”) and as servicer (in such capacity, the “Servicer”), LaSalle Bank National Association (“LaSalle”), as trustee (“Trustee”), of Xxxxxx Xxxxxxx Mortgage Loan Trust 2007-15AR (the “Trust”), and acknowledged by Xxxxx Fargo Bank, National Association, as master servicer (in such capacity, the “Master Servicer”) and as securities administrator (in such capacity, the “Securities Administrator”).

RECITALS

WHEREAS Xxxxxx Xxxxxxx Mortgage Capital Holdings LLC, the Seller and the Servicer have entered into (a) a certain Mortgage Loan Purchase and Warranties Agreement, dated as of September 1, 2006 (as amended or modified to the date hereof, the “Sale Agreement”) and (b) a certain Servicing Agreement, dated as of September 1, 2006 (as amended or modified to the date hereof, the “Servicing Agreement” and, together with the Sale Agreement, the “Agreements”), pursuant to which MSMCH has acquired certain Mortgage Loans pursuant to the terms of the Sale Agreement and the Servicer has agreed to service such Mortgage Loans pursuant to the terms of the Servicing Agreement;

WHEREAS the Depositor has agreed, on the terms and conditions contained herein, to purchase from MSMCH certain of the Mortgage Loans (the “Specified Mortgage Loans”) which are subject to the provisions of the Agreements and are listed on the mortgage loan schedule attached as Exhibit I hereto (the “Specified Mortgage Loan Schedule”); and

WHEREAS the Trustee, on behalf of the Trust, has agreed, on the terms and conditions contained herein, to purchase from the Depositor the Specified Mortgage Loans;

NOW, THEREFORE, in consideration of the mutual promises contained herein and other good and valuable consideration (the receipt and sufficiency of which are hereby acknowledged), the parties agree as follows:

Assignment and Assumption

(a) On and as of the date hereof, MSMCH hereby sells, assigns and transfers to the Depositor all of its right, title and interest in the Specified Mortgage Loans and all rights and obligations related thereto as provided under the Agreement to the extent relating to the Specified Mortgage Loans, the Depositor hereby accepts such assignment from MSMCH (the “First Assignment and Assumption”), and the Seller hereby acknowledges the First Assignment and Assumption.

MSMCH specifically reserves and does not assign to the Depositor hereunder any and all right, title and interest in, to and under and all obligations of MSMCH with respect to any Mortgage Loans subject to the Agreement which are not the Specified Mortgage Loans.

(b) On and as of the date hereof, immediately after giving effect to the First Assignment and Assumption, the Depositor hereby sells, assigns and transfers to the Trustee, on behalf of the Trust, all of its right, title and interest in the Specified Mortgage Loans and all rights and obligations related thereto as provided under the Agreements to the extent relating to the Specified Mortgage Loans, and the Trustee, on behalf of the Trust, hereby accepts such assignment from the Depositor (the “Second Assignment and Assumption”), and the Seller hereby acknowledges the Second Assignment and Assumption.

(c) On and as of the date hereof, MSMCH represents and warrants to the Depositor and the Trustee that MSMCH has not taken any action that would serve to impair or encumber the respective ownership interests of the Depositor and the Trustee in the Specified Mortgage Loans since the date of MSMCH’s acquisition of the Specified Mortgage Loans.

Recognition of Trustee

(a) From and after the date hereof, both MSMCH and the Seller shall note the transfer of the Specified Mortgage Loans to the Trustee, in their respective books and records and shall recognize the Trustee, on behalf of the Trust, as of the date hereof, as the owner of the Specified Mortgage Loans, and Servicer shall service the Specified Mortgage Loans for the benefit of the Trust pursuant to the Servicing Agreement, the terms of which are incorporated herein by reference. It is the intention of the Seller, the Servicer, the Depositor, the Trustee and MSMCH that this Assignment shall be binding upon and inure to the benefit of the Depositor, the Trustee and MSMCH and their respective successors and assigns.

(b) Without in any way limiting the foregoing, the parties confirm that this Assignment includes the rights relating to amendments or waivers under the Agreements. Accordingly, the right of MSMCH to consent to any amendment of the Agreement and its rights concerning waivers as set forth in Section 23 of the Sale Agreement and Section 11.02 of the Servicing Agreement shall be exercisable, to the extent any such amendment or waiver affects the Specified Mortgage Loans or any of the rights under the Agreement with respect thereto (other than the servicing of the Specified Mortgage Loans, which shall be enforced by the Master Servicer) by the Trustee as assignee of MSMCH.

(c) It is expressly understood and agreed by the parties hereto that (i) this Assignment is executed and delivered by LaSalle Bank National Association, not individually or personally but solely on behalf of the Trust, as the assignee, in the exercise of the powers and authority conferred and vested in it, as Trustee, pursuant to the Pooling and Servicing Agreement dated as of the date hereof among the Depositor, the Master Servicer, Xxxxx Fargo Bank, National Association, as securities administrator (the “Securities Administrator”) and the Trustee (the “Pooling and Servicing Agreement”), (ii) each of the representations, undertakings and agreements herein made on the part of assignee is made and intended not as personal representations, undertakings and agreements by LaSalle Bank National Association but is made and intended for the purpose of binding only the Trust , (iii) nothing herein contained shall be construed as creating any liability for LaSalle Bank National Association, individually or personally, to perform any covenant (either express or implied) contained herein and (iv) under no circumstances shall LaSalle Bank National Association be personally liable for the payment of any indebtedness or expenses of the Trust, or be liable for the breach or failure of any

obligation, representation, warranty or covenant made or undertaken by the Trust under this Assignment and (v) all recourse for any payment liability or other obligation of the assignee shall be had solely to the assets of the Trust.

Representations and Warranties

(a) The Depositor represents and warrants that it is a sophisticated investor able to evaluate the risks and merits of the transactions contemplated hereby, and that it has not relied in connection therewith upon any statements or representations of the Seller or MSMCH other than those contained in the Agreements or this Assignment.

(b) Each of the parties hereto represents and warrants that it is duly and legally authorized to enter into this Assignment.

(c) Each of the parties hereto represents and warrants that this Assignment has been duly authorized, executed and delivered by it and (assuming due authorization, execution and delivery thereof by each of the other parties hereto) constitutes its legal, valid and binding obligation, enforceable against it in accordance with its terms, except as such enforcement may be limited by bankruptcy, insolvency, reorganization or other similar laws affecting the enforcement of creditors’ rights generally and by general equitable principles (regardless of whether such enforcement is considered in a proceeding in equity or at law).

(d) The Seller hereby restates as of the related closing date (as defined in the Sale Agreement), the representations and warranties set forth in Sections 9.01 and 9.02 of the Sale Agreement, with respect to each of the Specified Mortgage Loans that were sold by it under the Sale Agreement, to and for the benefit of the Depositor, the Trustee and the Trust, and by this reference incorporates such representations and warranties herein, as of such date.

(e) The Servicer hereby restates, as of November 30, 2007 (the “Closing Date”), the representations and warranties set forth in Articles X and XIII of the Servicing Agreement, with respect to each of the Specified Mortgage Loans it agreed to service under the Servicing Agreement, to and for the benefit of the Depositor, the Trustee and the Trust, and by this reference incorporates such representations and warranties herein, as of such Closing Date.

(f) The Servicer hereby represents and warrants to the Trustee that, to the extent the Mortgage Loans will be part of a REMIC, the Servicer shall service the Mortgage Loans and any real property acquired upon default thereof (including, without limitation, making or permitting any modification, waiver or amendment of any term of any Mortgage Loan) in accordance with the Servicing Agreement, but in no event in a manner that would (a) cause the REMIC to fail or qualify as a REMIC or (b) result in the imposition of a tax upon the REMIC (including, but not limited to, the tax on prohibited transactions as defined in Section 860F(a)(2) of the Code, the tax on contributions to a REMIC set forth in Section 860G(d) of the Code and the tax on “net income from foreclosure property” as set forth in Section 860G(c) of the Code).

4. The Servicer hereby acknowledges that Xxxxx Fargo Bank, National Association has been appointed as the Master Servicer of the Specified Mortgage Loans pursuant to the Pooling and Servicing Agreement and, therefore, has the right to enforce all obligations of the Servicer under the Servicing Agreement. Such rights will include, without limitation, the right to terminate the Servicer under the Servicing Agreement upon the occurrence of an event of default thereunder, the right to receive all remittances required to be made by the Servicer under the Servicing Agreement, the right to receive all monthly reports and other data required to be delivered by the Servicer under the Servicing Agreement, the right to examine the books and records of the Servicer, indemnification rights and the right to exercise certain rights of consent and approval of MSMCH. The Servicer shall make all distributions under the Servicing Agreement to the Master Servicer by wire transfer of immediately available funds to:

Xxxxx Fargo Bank, National Association

ABA Number: 000-000-000

Account Name: Corporate Trust Clearing

Account number: 0000000000

For further credit to: 53188900, MSM 2007-15AR

The Servicer shall deliver all reports required to be delivered under the Agreement to the Master Servicer at the following address:

Xxxxx Fargo Bank, National Association

0000 Xxx Xxxxxxxxx Xxxx

Xxxxxxxx, Xxxxxxxx 00000

Attention: Client Manager, MSM 2007-15AR

Telecopier: (000) 000-0000

Amendments to the Servicing Agreement

The parties to this Assignment hereby agree to amend the Servicing Agreement as follows:

(a) With respect to the Specified Mortgage Loans, “Permitted Investments” shall have the meaning of such term as defined in the Pooling and Servicing Agreement.

(b) The definition of “Eligible Account” is hereby inserted into Section 1.01:

“Eligible Account: Any of (i) an account or accounts maintained with a federal or state chartered depository institution or trust company that is an Eligible Institution, the short-term unsecured debt obligations of which (or, in the case of a depository institution or trust company that is the principal subsidiary of a holding company, the debt obligations of such holding company) have the highest short-term ratings of each Rating Agency at the time any amounts are held on deposit therein, or (ii) a trust account or accounts maintained with the corporate trust department of a federal depository institution or state-chartered depository institution subject to the regulations regarding fiduciary funds on deposit similar to Title 12 of the U.S. Code of Federal Regulations Section 9.10(b) which, in either case, has corporate trust powers and is acting in its fiduciary capacity, or (iii) any other account acceptable to each Rating Agency, as

evidenced by a signed writing delivered by each Rating Agency. Eligible Accounts may bear interest, and may include, if otherwise qualified under this definition, accounts maintained with the Trustee, the Paying Agent, the Securities Administrator or the Master Servicer.”

“Eligible Institution: An institution having the highest short-term debt rating, and one of the two highest long-term debt ratings of the Rating Agencies or the approval of the Rating Agencies. Upon a downgrade in the rating of an Eligible Institution at which an Eligible Account is held below the required ratings set forth in the definition of Eligible Account, within 30 days of such downgrade, such account will be transferred to an account meeting the requirements of the definition of Eligible Account; provided, however, that this transfer requirement may be waived by the applicable Rating Agency.”

(d) The definition of “Remittance Date” in Section 1.01 is hereby amended and restated in its entirety as follows:

“Remittance Date: The 18th day of each month (or, if such 18th day is not a Business Day, the following Business Day) beginning with the first Remittance Date after the Closing Date.”

(e) The definition of “Servicing Fee” in Section 1.01 is hereby amended and restated in its entirety as follows:

“Servicing Fee: With respect to each Mortgage Loan subject to this Agreement, an amount equal to one-twelfth of the product of (a) the Servicing Fee Rate and (b) the scheduled principal balance of such Mortgage Loan payable monthly. Such fee shall be payable monthly. The obligation of the Purchaser to pay the Servicing Fee is limited to, and the Servicing Fee is payable solely from, the interest portion (including recoveries with respect to interest from Liquidation Proceeds, to the extent permitted by Section 4.03) of such Monthly Payment collected by the Servicer, or as otherwise provided under Section 4.03.”

(f) With respect to each Specified Mortgage Loan, the definition of “Servicing Fee Rate” in Section 1.01 is hereby amended and restated in its entirety as follows:

“Servicing Fee Rate: With respect to each Mortgage Loan that is a fixed rate mortgage loan, 25 basis points (0.25%) per annum. With respect to each Mortgage Loan that is an adjustable rate mortgage loan, 37.5 basis points (0.375)% per annum.”

(g) With respect to the Specified Mortgage Loans, Section 2.01 is hereby amended as follows:

(1) to remove requiring the consent of the Purchaser prior to the modification, in accordance with Accepted Servicing Practices, of any mortgage loan that is in default or with respect to which a default is reasonable foreseeable; and

(2) to require the Servicer to provide prior written notice to the Depositor, the Master Servicer and each Rating Agency of any changes it intends to make to its policies and practices related to the modifications of Mortgage Loans prior to its implementation thereof.

(h) The first, second and third sentences of the first paragraph of Section 2.04 are amended and restated in their entirety as follows:

“The Servicer shall segregate and hold all funds collected and received pursuant to the Mortgage Loans separate and apart from any of its own funds and general assets and shall establish one or more Custodial Accounts, to be maintained under the sole dominion and control of the Purchaser and titled “IndyMac Bank, F.S.B. in trust for Xxxxxx Xxxxxxx Mortgage Loan Trust 2007-15AR”. The Custodial Account shall be an Eligible Account. Any funds deposited in the Custodial Account shall at all times be fully insured.”

(i) The second sentence of the last paragraph of Section 2.04 is amended and restated in its entirety as the following two sentences:

“The Servicer may at its option invest the amounts on deposit in the Custodial Account in Permitted Investments. Any income from Permitted Investments paid on funds deposited in the Custodial Account by the depository institution shall accrue to the benefit of the Servicer and the Servicer shall be entitled to retain and withdraw such interest from the Custodial Account pursuant to Section 2.05.”

(j) The word “and” is deleted from the end of Section 2.05(iii) of the Servicing Agreement, the word “and” is added at the end of Section 2.05(iv) of the Servicing Agreement and the following paragraph is hereby incorporated into each Agreement as new Section 2.05(v):

“to reimburse itself for unreimbursed Servicing Advances and unreimbursed advances made in accordance with Section 3.03, to the extent that such amounts are nonrecoverable by the Servicer pursuant to subclause (ii) above, provided that the Mortgage Loan for which such advances were made is not required to be repurchased by the Seller pursuant to Section 9.03 of the Sale Agreement.”

(k) The first and second sentences of the first paragraph of Section 2.06 of the Servicing Agreement are amended and restated in their entirety as follows:

"The Servicer shall segregate and hold all funds collected and received pursuant to a Mortgage Loan constituting Escrow Payments separate and apart from any of its own funds and general assets and shall establish and maintain one or more Escrow Accounts, in the form of time deposit or demand accounts, and titled “IndyMac Bank, F.S.B. in trust for Xxxxxx Xxxxxxx Mortgage Loan Trust 2007-15AR”. The Escrow Account shall be an Eligible Account."

(l) The second and third paragraphs of Section 2.16 of the Servicing Agreement are hereby amended and restated in their entirety as follows:

“With respect to any REO Property, the deed or certificate of sale shall be taken in the name of the Purchaser, or its designee. The Trustee’s name shall be placed on the title to such REO Property solely as the Trustee hereunder and not in its individual capacity. The Servicer shall ensure that the title to such REO Property references the Agreement and the Purchaser’s capacity thereunder. Pursuant to its efforts to sell such REO Property, the Servicer shall either itself or through an agent selected by the Servicer protect and conserve such REO Property in the same manner and to such extent as is customary in the locality where such REO Property is located and may, incident to its conservation and protection of the interests of the Purchaser, or its designee, rent the same, or any part thereof, as the Servicer deems to be in the best interest of the Purchaser, or its designee, for the period prior to the sale of such REO Property. The Servicer shall prepare for and deliver to the Purchaser, or its designee, a statement with respect to each REO Property that has been rented showing the aggregate rental income received and all expenses incurred in connection with the maintenance of such REO Property at such times as is necessary to enable the Purchaser, or its designee, to comply with the reporting requirements of the REMIC Provisions. The net monthly rental income, if any, from such REO Property shall be deposited in the Custodial Account no later than the close of business on each Determination Date. The Servicer shall perform the tax reporting and withholding required by Sections 1445 and 6050J of the Code with respect to foreclosures and abandonments, the tax reporting required by Section 6050H of the Code with respect to the receipt of mortgage interest from individuals and any tax reporting required by Section 6050P of the Code with respect to the cancellation of indebtedness by certain financial entities, by preparing such tax and information returns as may be required, in the form required, and delivering the same to the Purchaser, or its designee, for filing.

In the event that the Purchaser, or its designee, acquires any Mortgaged Property as aforesaid or otherwise in connection with a default or imminent default on a Mortgage Loan, the Servicer shall dispose of such Mortgaged Property as soon as practicable in a manner that maximizes the Liquidation Proceeds thereof, but in no event later than three years after its acquisition by the Purchaser, or its designee. In that event, the Purchaser, or its designee, shall have been supplied with an Opinion of Counsel to the effect that the holding by the Purchaser, or its designee, of such Mortgaged Property subsequent to a three-year period, if applicable, will not result in the imposition of taxes on “prohibited transactions” of any REMIC as defined in section 860F of the Code or cause any REMIC to fail to qualify as a REMIC at any time, the Purchaser, or its designee, may continue to hold such Mortgaged Property (subject to any conditions contained in such Opinion of Counsel) after the expiration of such three-year period. Notwithstanding any other provision of this Agreement, no Mortgaged Property acquired by the Purchaser, or its designee, shall be rented (or allowed to continue to be rented) or otherwise used for the production of income by or on behalf of the Purchaser, or its designee, in such a manner or pursuant to any terms that would (i) cause such Mortgaged Property to fail to qualify as “foreclosure property” within the meaning of section 860G(a)(8) of the Code or (ii) subject any REMIC to the imposition of any federal, state or local income taxes on the income earned from such Mortgaged Property under Section 860G(c) of the Code or otherwise, unless the Servicer has agreed to indemnify and hold harmless the Purchaser, or its designee, with respect to the imposition of any such taxes.”

(m) The first sentence of Section 2.18 of the Servicing Agreement is hereby amended to replace the words “Business Day of each month” with the words “calendar day of each month (or, if such 10th day is not a Business Day, the following Business Day)”

(n) The second paragraph of Section 3.01 of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“With respect to any funds deposited in the Custodial Account after the Business Day on which such deposit was required to be made, the Servicer shall pay to the Purchaser interest on any such late payment at an annual rate equal to the Prime Rate, adjusted as of the date of each change, plus two percentage points, but in no event greater than the maximum amount permitted by applicable law. Such interest shall be deposited in the Custodial Account by the Servicer on the date such late payment is made and shall cover the period commencing with such Business Day and ending with the Business Day on which such payment is made, both inclusive. The payment by the Servicer of any such interest shall not be deemed an extension of time for payment or a waiver of any Event of Default by the Servicer.”

(o) The first paragraph of Section 3.02 of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“Each month, no later than the 10^th calendar day of each month, the Servicer shall furnish to the Master Servicer a remittance report, in the form of Exhibit II hereto (the “Remittance Report”), and such other mortgage loan level data or information as mutually agreed upon by the Servicer and the Master Servicer, in electronic format acceptable to the Master Servicer, in each case with respect to funds being remitted to the Master Servicer on the related Remittance Date. The preceding sentence notwithstanding, the Purchaser and the Servicer acknowledge and agree that the purpose of reporting the information set forth in Exhibit IIC-1 (the “Loan Modification Information”) is to facilitate compliance by the Purchaser with certain Rating Agency requirements, and the Purchaser and the Servicer both acknowledge that those requirements, and therefore what constitutes Loan Modification Information, may change over time. The Purchaser shall not exercise its right to request delivery of information under these provisions other than in good faith, or for purposes other than compliance with Rating Agency requirements. The Servicer agrees to use its best efforts to deliver to the Purchaser and its designees (including the Master Servicer) all required Loan Modification Information on a timely basis to permit the Purchaser to comply with any related Rating Agency requirements. To the extent that, as of any date that the Servicer would be required to deliver it, the Servicer is unable to provide any portion of the Loan Modification Information, the Servicer hereby agrees that it will state which portion and the reasons for its inability to provide it.”

(p) Section 3.03 of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“Advances by Servicer. On the Business Day immediately preceding each Remittance Date, the Servicer shall (a) deposit in the Custodial Account from its own

funds an amount equal to all Monthly Payments which were due on the Mortgage Loans during the applicable Due Period and which were delinquent at the close of business on the immediately preceding Determination Date or which were deferred pursuant to Section 2.01, (b) cause to be made an appropriate entry in the records of the Custodial Account that amounts held for future distribution have been, as permitted by this Section 3.03, used by the Servicer in discharge of any such advance or (c) make advances in the form of any combination of (a) or (b) aggregating the total amount of advances to be made. The Servicer’s obligation to make such advances as to any Mortgage Loan will continue through the earlier to occur of (a) the last Monthly Payment due prior to the payment in full of the Mortgage Loan or (b) the last Remittance Date prior to the Remittance Date for the distribution of all Liquidation Proceeds and other payments or recoveries (including Insurance Proceeds, and Condemnation Proceeds) with respect to the Mortgage Loan; provided, however, that such obligation shall cease if the Servicer, in its good faith judgment, determines that an advance would not be recoverable pursuant to Section 2.05(ii). The determination by the Servicer that an advance, if made, would be nonrecoverable, shall be evidenced by an Officer’s Certificate of the Servicer, delivered to the Purchaser, which details the reasons for such determination. To the extent permitted under Section 2.05 hereof, the Servicer shall be entitled to first priority reimbursement for principal and interest advances and for Servicing Advances from recoveries from the related Mortgagor or from all Liquidation Proceeds and other payments or recoveries (including Insurance Proceeds and Condemnation Proceeds) with respect to the related Mortgage Loan.”

(q) Sections 4.04 and 4.05 of the Servicing Agreement are hereby deleted.

(r) the following paragraph is hereby incorporated into the Servicing Agreement as new Section 11.01(h):

“(h) failure by the Servicer to duly perform, within the required time period, its obligations under Sections 13.04 and 13.05 which failure continues unremedied for a period of fourteen (14) days;”

(s) The following paragraph is hereby incorporated into the Servicing Agreement as new Section 12.16:

“Third Party Beneficiary. For purposes of this Agreement, including but not limited to Sections 13.04 and 13.05, any Master Servicer shall be considered a third party beneficiary to this Agreement entitled to all the rights and benefits accruing to any Master Servicer herein as if it were a direct party to this Agreement. In addition, a copy of all assessments, attestations, reports and certifications required to be delivered by the Servicer under this Agreement and the Servicing Agreement shall be delivered to the Master Servicer by the date(s) specified herein or therein, and where such documents are required to be addressed to any party, such addressees shall include the Master Servicer and the Master Servicer shall be entitled to rely on such documents.”

(t) Section 13.03(d) of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“(d) For the purpose of satisfying the reporting obligation under the Exchange Act with respect to any class of asset-backed securities, each Seller and the Servicer shall (or shall cause each Subservicer and Third-Party Originator to) (i) provide prompt notice to the Purchaser, any Master Servicer and any Depositor in writing of (A) any material litigation or governmental proceedings involving the Servicer, any Subservicer or any Third-Party Originator, (B) any affiliations or relationships that develop following the closing date of a Securitization Transaction between the Servicer, any Subservicer or any Third-Party Originator and any of the parties specified in clause (D) of paragraph (a) of this Section (and any other parties identified in writing by the requesting party) with respect to such Securitization Transaction, (C) any Event of Default under the terms of this Agreement or any Reconstitution Agreement, (D) any merger, consolidation or sale of substantially all of the assets of the Servicer, and (E) the Servicer’s entry into an agreement with a Subservicer to perform or assist in the performance of any of the Servicer’s obligations under this Agreement or any Reconstitution Agreement and (ii) provide to the Purchaser and any Depositor a description of such proceedings, affiliations or relationships.”

(u) Section 13.03(f) of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“(f) In addition to such information as the Servicer, as servicer, is obligated to provide pursuant to other provisions of this Agreement, not later than ten days prior to the deadline for the filing of any distribution report on Form 10-D in respect of any Securitization Transaction that includes any of the Mortgage Loans serviced by the Servicer or any Subservicer, the Servicer or such Subservicer, as applicable, shall, to the extent the Servicer or such Subservicer has knowledge, provide to the party responsible for filing such report (including, if applicable, the Master Servicer) notice of the occurrence of any of the following events along with all information, data, and materials related thereto as may be required to be included in the related distribution report on Form 10-D (as specified in the provisions of Regulation AB referenced below):

(i) any material modifications, extensions or waivers of pool asset terms, fees, penalties or payments during the distribution period or that have cumulatively become material over time (Item 1121(a)(11) of Regulation AB);

(ii) material breaches of pool asset representations or warranties or transaction covenants (Item 1121(a)(12) of Regulation AB); and

(iii) information regarding new asset-backed securities issuances backed by the same pool assets, any pool asset changes (such as, additions, substitutions or repurchases), and any material changes in origination, underwriting or other criteria for acquisition or selection of pool assets (Item 1121(a)(14) of Regulation AB).

(v) Section 13.03 of the Servicing Agreement is hereby amended by adding a new Section 13.03(g) as follows:

(g) The Servicer shall provide to the Purchaser, any Master Servicer and any Depositor, evidence of the authorization of the person signing any certification or statement related to the Servicer delivered in respect of compliance with Regulation AB.”

(w) Section 13.05(a)(iv) of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“(iv) deliver, and cause each subservicer and subcontractor described in clause (iii) above to deliver, to the Purchaser, any Depositor and any other Person that will be responsible for signing the certification (a “Sarbanes Certification”) required by Rules 13a-14(d) and 15d-14(d) under the Exchange Act (pursuant to Section 302 of the Xxxxxxxx-Xxxxx Act of 2002) on behalf of an asset-backed issuer with respect to a Securitization Transaction a certification, signed by an appropriate officer of the Servicer, in the form attached hereto as Exhibit 7.”

(x) Section 13.06(a) of the Servicing Agreement is hereby amended to add Sections 13.03(f) and 13.03(g) as provisions that the Subservicers must comply with to same extent as if such Subservicer were the Servicer.

(y) The last sentence of the last paragraph of Section 13.06 of the Servicing Agreement is amended to require the Servicer to cause any Subservicer or Subcontractor to provide any assessment of compliance and attestation but also any other certifications required to delivered under this Section 13.06.

(z) Section 13.07(a)(ii) of the Servicing Agreement is hereby amended and restated in its entirety as follows:

“(ii) any breach by the Seller or Servicer under, or any failure by any Seller, the Servicer, any Subservicer, any Subcontractor or any Third-Party Originator to deliver any information, report, certification, accountants’ letter or other material when and as required, under this Article XIII, including any failure by the Servicer to identify pursuant to Section 13.06(b) any Subcontractor “participating in the servicing function” within the meaning of Item 1122 of Regulation AB;”

(aa) The word “or” is struck at the end of Section 13.07(a)(ii) of the Servicing Agreement and the following is inserted to Section 13.07(a) of the Servicing Agreement:

“(iv) negligence, bad faith or willful misconduct of the Servicer in connection with its performance under this Article XIII.

If the indemnification provided for herein is unavailable or insufficient to hold harmless an Indemnified Party, then the Servicer agrees that it shall contribute to the amount paid or payable by such Indemnified Party as a result of any claims, losses, damages or liabilities incurred by such Indemnified Party in such proportion as is appropriate to reflect the relative fault of such Indemnified Party on the one hand and the Servicer on the other.

This indemnification shall survive the termination of this Agreement or the termination of any party to this Agreement.”

(bb) The following parenthetical is inserted directly before the proviso in the last sentence of the first paragraph of Section 13.07(b)(i) of the Servicing Agreement:

“(and if the Servicer is servicing any of the Mortgage Loans in a Securitization Transaction, appoint a successor servicer reasonably acceptable to the Master Servicer for such Securitization Transaction)”

(cc) The first paragraph of Section 13.07(b)(ii) is hereby amended by replacing the words “ten calendar days” with “fourteen calendar days”.

(dd) Exhibit 1 to the Servicing Agreement is hereby deleted and replaced with Exhibit II to this Assignment.

(ee) Exhibit 7 to the Servicing Agreement is hereby deleted and replaced with Exhibit III to this Assignment.

(ff) Exhibit 8 to the Servicing Agreement is hereby deleted and replaced with Exhibit IV to this Assignment.

(gg) Written notice provided in compliance with Sections 13.03(d), (e) or (f) of the Servicing Agreement shall be substantially in the form of Exhibit V to this Assignment.

Indemnification

The Master Servicer shall indemnify and hold harmless the Servicer and its affiliates, and in each case, its officers, directors and agents from and against any losses, damages, penalties, fines, forfeitures, reasonable legal fees and related costs, judgments and other costs and expenses arising out of or based upon a breach by the Master Servicer or any of its officers, directors, agents or affiliates of its obligations in connection with the preparation, filing and certification of any Form 10-K pursuant to the Pooling and Servicing Agreement or the negligence, bad faith or willful misconduct of the Master Servicer in connection therewith. In addition, the Master Servicer shall indemnify and hold harmless the Servicer and its affiliates, and in each case, its officers, directors and agents from and against any losses, damages, penalties, fines, forfeitures, reasonable legal fees and related costs, judgments and other costs and expenses arising out of or based upon a breach by any Servicer (as defined in the Pooling and Servicing Agreement), other than the Servicer (as defined herein), of its obligations in connection with any back-up certification (or any other back-up documents) to any certification of any Form 10-K required to be provided by the Master Servicer, but solely to the extent the Master Servicer receives amounts from such Servicer in connection with any indemnification provided by such Servicer (in each case as defined in the Pooling and Servicing Agreement) to the Master Servicer.

7. Continuing Effect

Except as contemplated hereby, the Agreements shall remain in full force and effect in accordance with their terms.

Governing Law

This Assignment and the rights and obligations hereunder shall be governed by and construed in accordance with the internal laws of the State of New York.

Notices

Any notices or other communications permitted or required under the Agreements to be made to the Depositor, MSMCH, the Master Servicer, the Seller, the Servicer and the Trustee shall be made in accordance with the terms of the Agreements and shall be sent to the Depositor and Trustee as follows:

In the case of MSMCH:

Xxxxxx Xxxxxxx Mortgage Capital Holdings LLC

0000 Xxxxxx xx xxx Xxxxxxxx

Xxx Xxxx, Xxx Xxxx 00000

Attention: Xxxxxx Xxxxxxx Mortgage Loan Trust 2007-15AR

With a copy to:

Xxxxxx Xxxxxxx & Co. Incorporated

0000 Xxxxxxxx

Xxx Xxxx, Xxx Xxxx 00000

Attention: General Counsel’s Office

In the case of the Depositor:

Xxxxxx Xxxxxxx Capital I Inc.

0000 Xxxxxxxx

Xxx Xxxx, Xxx Xxxx 00000

Attention: Xxxxxx Xxxxxxx Mortgage Loan Trust 2007-15AR

In the case of the Trustee:

LaSalle Bank National Association

000 Xxxxx XxXxxxx Xxxxxx, Xxxxx 0000

Xxxxxxx, Xxxxxxxx 00000

Attention: Global Securities and Trust Services MSM 2007-15AR

In the case of the Seller and the Servicer:

IndyMac Bank, F.S.B.

0000 X. Xxxxxxxx Xxxxxxxxx

Xxxxxxxx, Xxxxxxxxxx 00000

Attention: Secondary Marketing

or to such other address as may hereafter be furnished by the Depositor and the Trustee to the parties in accordance with the provisions of the Agreements.

10.

Ratification

Except as modified and expressly amended by this Assignment, the Agreements are in all respects ratified and confirmed, and all terms, provisions and conditions thereof shall be and remain in full force and effect.

11.

Counterparts

This Assignment may be executed in counterparts, each of which when so executed shall be deemed to be an original and all of which when taken together shall constitute one and the same instrument.

12.

Definitions

Any capitalized term used but not defined in this Assignment has the same meaning as in the Agreements.

[SIGNATURE PAGE FOLLOWS]

IN WITNESS WHEREOF, the parties hereto have executed this Assignment the day and year first above written.

	XXXXXX XXXXXXX MORTGAGE CAPITAL HOLDINGS LLC, successor by merger to Xxxxxx Xxxxxxx Mortgage Capital Inc.

	By:	/s/ Xxxxxxx Xxx
		Name Xxxxxxx Xxx
		Title Vice President

	XXXXXX XXXXXXX CAPITAL I INC.

	By:	/s/ Xxxxxxx Xxx
		Name Xxxxxxx Xxx
		Title Vice President

	INDYMAC BANK, F.S.B.

	By:	/s/ Xxxx Xxxxxxxx
		Name /s/ Xxxx Xxxxxxxx
		Title Vice President

Acknowledged and Agreed:

XXXXX FARGO BANK, NATIONAL

ASSOCIATION, as Master Servicer

By: /s/ Xxxxx X. Xxxxxx

Name: Xxxxx X. Xxxxxx

Title: Vice President

LASALLE BANK NATIONAL ASSOCIATION,

as Trustee of Xxxxxx Xxxxxxx Mortgage Loan

Trust 2007-15AR

By: /s/ Xxxx Xxxxx

Name: Xxxx Xxxxx

Title: Vice President

EXHIBIT I

Mortgage Loan Schedule

[see Schedule A to Pooling and Servicing Agreement]

Exhibit IIA: Standard File Layout – Delinquency Reporting
Column/Header Name	Description	Decimal	Format Comment
SERVICER_LOAN_NBR	A unique number assigned to a loan by the Servicer. This may be different than the LOAN_NBR
LOAN_NBR	A unique identifier assigned to each loan by the originator.
CLIENT_NBR	Servicer Client Number
SERV_INVESTOR_NBR	Contains a unique number as assigned by an external servicer to identify a group of loans in their system.
BORROWER_FIRST_NAME	First Name of the Borrower.
BORROWER_LAST_NAME	Last name of the borrower.
PROP_ADDRESS	Street Name and Number of Property
PROP_STATE	The state where the property located.
PROP_ZIP	Zip code where the property is located.
BORR_NEXT_PAY_DUE_DATE	The date that the borrower's next payment is due to the servicer at the end of processing cycle, as reported by Servicer.		MM/DD/YYYY
LOAN_TYPE	Loan Type (i.e. FHA, VA, Conv)
BANKRUPTCY_FILED_DATE	The date a particular bankruptcy claim was filed.		MM/DD/YYYY
BANKRUPTCY_CHAPTER_CODE	The chapter under which the bankruptcy was filed.
BANKRUPTCY_CASE_NBR	The case number assigned by the court to the bankruptcy filing.
POST_PETITION_DUE_DATE	The payment due date once the bankruptcy has been approved by the courts		MM/DD/YYYY
BANKRUPTCY_DCHRG_DISM_DATE	The Date The Loan Is Removed From Bankruptcy. Either by Dismissal, Discharged and/or a Motion For Relief Was Granted.		MM/DD/YYYY
LOSS_MIT_APPR_DATE	The Date The Loss Mitigation Was Approved By The Servicer		MM/DD/YYYY
LOSS_MIT_TYPE	The Type Of Loss Mitigation Approved For A Loan Such As;
LOSS_MIT_EST_COMP_DATE	The Date The Loss Mitigation /Plan Is Scheduled To End/Close		MM/DD/YYYY
LOSS_MIT_ACT_COMP_DATE	The Date The Loss Mitigation Is Actually Completed		MM/DD/YYYY
FRCLSR_APPROVED_DATE	The date DA Admin sends a letter to the servicer with instructions to begin foreclosure proceedings.		MM/DD/YYYY
ATTORNEY_REFERRAL_DATE	Date File Was Referred To Attorney to Pursue Foreclosure		MM/DD/YYYY
FIRST_LEGAL_DATE	Notice of 1st legal filed by an Attorney in a Foreclosure Action		MM/DD/YYYY
FRCLSR_SALE_EXPECTED_DATE	The date by which a foreclosure sale is expected to occur.		MM/DD/YYYY
FRCLSR_SALE_DATE	The actual date of the foreclosure sale.		MM/DD/YYYY
FRCLSR_SALE_AMT	The amount a property sold for at the foreclosure sale.	2	No commas(,) or dollar signs ($)
EVICTION_START_DATE	The date the servicer initiates eviction of the borrower.		MM/DD/YYYY
EVICTION_COMPLETED_DATE	The date the court revokes legal possession of the property from the borrower.		MM/DD/YYYY
LIST_PRICE	The price at which an REO property is marketed.	2	No commas(,) or dollar signs ($)
LIST_DATE	The date an REO property is listed at a particular price.		MM/DD/YYYY
OFFER_AMT	The dollar value of an offer for an REO property.	2	No commas(,) or dollar signs ($)
OFFER_DATE_TIME	The date an offer is received by DA Admin or by the Servicer.		MM/DD/YYYY
REO_CLOSING_DATE	The date the REO sale of the property is scheduled to close.		MM/DD/YYYY
REO_ACTUAL_CLOSING_DATE	Actual Date Of REO Sale		MM/DD/YYYY
OCCUPANT_CODE	Classification of how the property is occupied.
PROP_CONDITION_CODE	A code that indicates the condition of the property.
PROP_INSPECTION_DATE	The date a property inspection is performed.		MM/DD/YYYY

APPRAISAL_DATE	The date the appraisal was done.		MM/DD/YYYY
CURR_PROP_VAL	The current "as is" value of the property based on brokers price opinion or appraisal.	2
REPAIRED_PROP_VAL	The amount the property would be worth if repairs are completed pursuant to a broker's price opinion or appraisal.	2
If applicable:
DELINQ_STATUS_CODE	FNMA Code Describing Status of Loan
DELINQ_REASON_CODE	The circumstances which caused a borrower to stop paying on a loan. Code indicates the reason why the loan is in default for this cycle.
MI_CLAIM_FILED_DATE	Date Mortgage Insurance Claim Was Filed With Mortgage Insurance Company.		MM/DD/YYYY
MI_CLAIM_AMT	Amount of Mortgage Insurance Claim Filed		No commas(,) or dollar signs ($)
MI_CLAIM_PAID_DATE	Date Mortgage Insurance Company Disbursed Claim Payment		MM/DD/YYYY
MI_CLAIM_AMT_PAID	Amount Mortgage Insurance Company Paid On Claim	2	No commas(,) or dollar signs ($)
POOL_CLAIM_FILED_DATE	Date Claim Was Filed With Pool Insurance Company		MM/DD/YYYY
POOL_CLAIM_AMT	Amount of Claim Filed With Pool Insurance Company	2	No commas(,) or dollar signs ($)
POOL_CLAIM_PAID_DATE	Date Claim Was Settled and The Check Was Issued By The Pool Insurer		MM/DD/YYYY
POOL_CLAIM_AMT_PAID	Amount Paid On Claim By Pool Insurance Company	2	No commas(,) or dollar signs ($)
FHA_PART_A_CLAIM_FILED_DATE	Date FHA Part A Claim Was Filed With HUD		MM/DD/YYYY
FHA_PART_A_CLAIM_AMT	Amount of FHA Part A Claim Filed	2	No commas(,) or dollar signs ($)
FHA_PART_A_CLAIM_PAID_DATE	Date HUD Disbursed Part A Claim Payment		MM/DD/YYYY
FHA_PART_A_CLAIM_PAID_AMT	Amount HUD Paid on Part A Claim	2	No commas(,) or dollar signs ($)
FHA_PART_B_CLAIM_FILED_DATE	Date FHA Part B Claim Was Filed With HUD		MM/DD/YYYY
FHA_PART_B_CLAIM_AMT	Amount of FHA Part B Claim Filed	2	No commas(,) or dollar signs ($)
FHA_PART_B_CLAIM_PAID_DATE	Date HUD Disbursed Part B Claim Payment		MM/DD/YYYY
FHA_PART_B_CLAIM_PAID_AMT	Amount HUD Paid on Part B Claim	2	No commas(,) or dollar signs ($)
VA_CLAIM_FILED_DATE	Date VA Claim Was Filed With the Veterans Admin		MM/DD/YYYY
VA_CLAIM_PAID_DATE	Date Veterans Admin. Disbursed VA Claim Payment		MM/DD/YYYY
VA_CLAIM_PAID_AMT	Amount Veterans Admin. Paid on VA Claim	2	No commas(,) or dollar signs ($)

Exhibit IIB:Standard File Codes – Delinquency Reporting

The Loss Mit Type field should show the approved Loss Mitigation Code as follows:

ASUM-

Approved Assumption

BAP-

Borrower Assistance Program

CO-

Charge Off

DIL-

Deed-in-Lieu

FFA-

Formal Forbearance Agreement

MOD-

Loan Modification

PRE-

Pre-Sale

SS-

Short Sale

· MISC-

Anything else approved by the PMI or Pool Insurer

NOTE: Xxxxx Fargo Bank will accept alternative Loss Mitigation Types to those above, provided that they are consistent with industry standards. If Loss Mitigation Types other than those above are used, the Servicer must supply Xxxxx Fargo Bank with a description of each of the Loss Mitigation Types prior to sending the file.

The Occupant Code field should show the current status of the property code as follows:

Mortgagor

Tenant

Unknown

Vacant

The Property Condition field should show the last reported condition of the property as follows:

Damaged

Excellent

Fair

Gone

Good

Poor

Special Hazard

Unknown

Exhibit IIB:Standard File Codes – Delinquency Reporting, Continued

The FNMA Delinquent Reason Code field should show the Reason for Delinquency as follows:

	Delinquency Code	Delinquency Description
	001	FNMA-Death of principal mortgagor
	002	FNMA-Illness of principal mortgagor
	003	FNMA-Illness of mortgagor’s family member
	004	FNMA-Death of mortgagor’s family member
	005	FNMA-Marital difficulties
	006	FNMA-Curtailment of income
	007	FNMA-Excessive Obligation
	008	FNMA-Abandonment of property
	009	FNMA-Distant employee transfer
	011	FNMA-Property problem
	012	FNMA-Inability to sell property
	013	FNMA-Inability to rent property
	014	FNMA-Military Service
	015	FNMA-Other
	016	FNMA-Unemployment
	017	FNMA-Business failure
	019	FNMA-Casualty loss
	022	FNMA-Energy environment costs
	023	FNMA-Servicing problems
	026	FNMA-Payment adjustment
	027	FNMA-Payment dispute
	029	FNMA-Transfer of ownership pending
	030	FNMA-Fraud
	031	FNMA-Unable to contact borrower
	INC	FNMA-Incarceration

Exhibit IIB:Standard File Codes – Delinquency Reporting, Continued

The FNMA Delinquent Status Code field should show the Status of Default as follows:

	Status Code	Status Description
	09	Forbearance
	17	Pre-foreclosure Sale Closing Plan Accepted
	24	Government Seizure
	26	Refinance
	27	Assumption
	28	Modification
	29	Charge-Off
	30	Third Party Sale
	31	Probate
	32	Military Indulgence
	43	Foreclosure Started
	44	Deed-in-Lieu Started
	49	Assignment Completed
	61	Second Lien Considerations
	62	Veteran’s Affairs-No Bid
	63	Veteran’s Affairs-Refund
	64	Veteran’s Affairs-Buydown
	65	Chapter 7 Bankruptcy
	66	Chapter 11 Bankruptcy
	67	Chapter 13 Bankruptcy

Exhibit IIC:Standard File Layout – Master Servicing

Exhibit 1: Layout
Column Name	Description	Decimal	Format Comment	Max Size
Each file requires the following fields:
SER_INVESTOR_NBR	A value assigned by the Servicer to define a group of loans.		Text up to 20 digits	20
LOAN_NBR	A unique identifier assigned to each loan by the investor.		Text up to 10 digits	10
SERVICER_LOAN_NBR	A unique number assigned to a loan by the Servicer. This may be different than the LOAN_NBR.		Text up to 10 digits	10
SCHED_PAY_AMT	Scheduled monthly principal and scheduled interest payment that a borrower is expected to pay, P&I constant.	2	No commas(,) or dollar signs ($)	11
NOTE_INT_RATE	The loan interest rate as reported by the Servicer.	4	Max length of 6	6
NET_INT_RATE	The loan gross interest rate less the service fee rate as reported by the Servicer.	4	Max length of 6	6
SERV_FEE_RATE	The servicer's fee rate for a loan as reported by the Servicer.	4	Max length of 6	6
SERV_FEE_AMT	The servicer's fee amount for a loan as reported by the Servicer.	2	No commas(,) or dollar signs ($)	11
NEW_PAY_AMT	The new loan payment amount as reported by the Servicer.	2	No commas(,) or dollar signs ($)	11
NEW_LOAN_RATE	The new loan rate as reported by the Servicer.	4	Max length of 6	6
ARM_INDEX_RATE	The index the Servicer is using to calculate a forecasted rate.	4	Max length of 6	6
ACTL_BEG_PRIN_BAL	The borrower's actual principal balance at the beginning of the processing cycle.	2	No commas(,) or dollar signs ($)	11
ACTL_END_PRIN_BAL	The borrower's actual principal balance at the end of the processing cycle.	2	No commas(,) or dollar signs ($)	11
BORR_NEXT_PAY_DUE_DATE	The date at the end of processing cycle that the borrower's next payment is due to the Servicer, as reported by Servicer.		MM/DD/YYYY	10
SERV_CURT_AMT_1	The first curtailment amount to be applied.	2	No commas(,) or dollar signs ($)	11
SERV_CURT_DATE_1	The curtailment date associated with the first curtailment amount.		MM/DD/YYYY	10
CURT_ADJ_ AMT_1	The curtailment interest on the first curtailment amount, if applicable.	2	No commas(,) or dollar signs ($)	11
SERV_CURT_AMT_2	The second curtailment amount to be applied.	2	No commas(,) or dollar signs ($)	11
SERV_CURT_DATE_2	The curtailment date associated with the second curtailment amount.		MM/DD/YYYY	10
CURT_ADJ_ AMT_2	The curtailment interest on the second curtailment amount, if applicable.	2	No commas(,) or dollar signs ($)	11

Exhibit 1:Continued	Standard Loan Level File Layout
Column Name	Description	Decimal	Format Comment	Max Size
SERV_CURT_AMT_3	The third curtailment amount to be applied.	2	No commas(,) or dollar signs ($)	11
SERV_CURT_DATE_3	The curtailment date associated with the third curtailment amount.		MM/DD/YYYY	10
CURT_ADJ_AMT_3	The curtailment interest on the third curtailment amount, if applicable.	2	No commas(,) or dollar signs ($)	11
PIF_AMT	The loan "paid in full" amount as reported by the Servicer.	2	No commas(,) or dollar signs ($)	11
PIF_DATE	The paid in full date as reported by the Servicer.		MM/DD/YYYY	10
ACTION_CODE	The standard FNMA numeric code used to indicate the default/delinquent status of a particular loan.		Action Code Key: 15=Bankruptcy, 00xXxxxxxxxxxx, , 00xXXX, 63=Substitution, 65=Repurchase,70=REO	2
INT_ADJ_AMT	The amount of the interest adjustment as reported by the Servicer.	2	No commas(,) or dollar signs ($)	11
SOLDIER_SAILOR_ADJ_AMT	The Soldier and Sailor Adjustment amount, if applicable.	2	No commas(,) or dollar signs ($)	11
NON_ADV_LOAN_AMT	The Non Recoverable Loan Amount, if applicable.	2	No commas(,) or dollar signs ($)	11
LOAN_LOSS_AMT	The amount the Servicer is passing as a loss, if applicable.	2	No commas(,) or dollar signs ($)	11
Plus the following applicable fields:
SCHED_BEG_PRIN_BAL	The scheduled outstanding principal amount due at the beginning of the cycle date to be passed through to investors.	2	No commas(,) or dollar signs ($)	11
SCHED_END_PRIN_BAL	The scheduled principal balance due to investors at the end of a processing cycle.	2	No commas(,) or dollar signs ($)	11
SCHED_PRIN_AMT	The scheduled principal amount as reported by the Servicer for the current cycle -- only applicable for Scheduled/Scheduled Loans.	2	No commas(,) or dollar signs ($)	11
SCHED_NET_INT	The scheduled gross interest amount less the service fee amount for the current cycle as reported by the Servicer -- only applicable for Scheduled/Scheduled Loans.	2	No commas(,) or dollar signs ($)	11
ACTL_PRIN_AMT	The actual principal amount collected by the Servicer for the current reporting cycle -- only applicable for Actual/Actual Loans.	2	No commas(,) or dollar signs ($)	11
ACTL_NET_INT	The actual gross interest amount less the service fee amount for the current reporting cycle as reported by the Servicer -- only applicable for Actual/Actual Loans.	2	No commas(,) or dollar signs ($)	11
PREPAY_PENALTY_ AMT	The penalty amount received when a borrower prepays on his loan as reported by the Servicer.	2	No commas(,) or dollar signs ($)	11
PREPAY_PENALTY_ WAIVED	The prepayment penalty amount for the loan waived by the servicer.	2	No commas(,) or dollar signs ($)	11

Exhibit 1: Continued	Standard Loan Level File Layout
Column Name	Description	Decimal	Format Comment	Max Size
MOD_DATE	The Effective Payment Date of the Modification for the loan.		MM/DD/YYYY	10
MOD_TYPE	The Modification Type.		Varchar - value can be alpha or numeric	30
DELINQ_P&I_ADVANCE_AMT	The current outstanding principal and interest advances made by Servicer.	2	No commas(,) or dollar signs ($)	11
BREACH_FLAG	Flag to indicate if the repurchase of a loan is due to a breach of Representations and Warranties		Y=Breach N=NO Breach Let blank if N/A	1

Exhibit 2: Monthly Summary Report by Single Investor

MONTHLY SUMMARY REPORT

For Month Ended: mm/dd/yyyy	Servicer Name: ___________________________________
Prepared by: ________________________________	Investor Nbr: _____________________________________

Section 1. Remittances and Ending Balances – Required Data
Beginning Loan Count	Ending Loan Count	Total Monthly Remittance Amo.	Total Ending Unpaid Principal Balance	Total Monthly Principal Balance
0	0	$0.00	$0.00	$0.00

Principal Calculation
1.	Monthly Principal Due	+ $0.00
2.	Current Curtailments	+ $0.00
3.	Liquidations	+ $0.00
4.	Other (attach explanation)	+ $0.00
5.	Principal Due	$0.00
6.	Interest (reported “gross”)	+ $0.00
7.	Interest Adjustments on Curtailments	+ $0.00
8.	Servicing Fees	− $0.00
9.	Other Interest (attach explanation)	+ $0.00
10.	Interest Due (need to subtract ser fee)	$0.00
Remittance Calculation
11.	Total Principal and Interest Due (lines 5+10)	+ $0.00
12.	Reimbursement of Non-Recoverable Advances	− $0.00
13.	Total Realized Gains	+ $0.00
14.	Total Realized Losses	− $0.00
15.	Total Prepayment Penalties	+ $0.00
16.	Total Non-Supported Compensating Interest	− $0.00
17.	Other (attach explanation)	$0.00
18.	Net Funds Due on or before Remittance Date	$ $0.00

Section 2. Delinquency Report – Optional Data for Loan Accounting
Installments Delinquent
Total No. of Loans	Total No. of Delinquencies	30- Days	60- Days	90 or more Days	In Foreclosure (Optional)	Real Estate Owned (Optional)	Total Dollar Amount of Delinquencies
0	0	0	0	0	0	0	$0.00

Section 3. REG AB Summary Reporting – REPORT ALL APPLICABLE FIELDS
REG XX XXXXXX	Loan Count	Balance
Prepayment Penalty Amt	0	$0.00
Prepayment Penalty Amt Waived	0	$0.00
Delinquency P&I Amount	0	$0.00

Exhibit IIC-1:Standard File Layout – Loan Modifications

With respect to each Specified Mortgage Loan that has been modified during the related Due Period, this report shall also include, in a form mutually acceptable to the Servicer and the Master Servicer, the following information:

1. The number of Specified Mortgage Loans that had loan modifications;

2. The date of each loan modification; and

3. The amount of principal and interest forgiveness with respect to each loan modification.

Exhibit IID : Calculation of Realized Loss/Gain Form 332– Instruction Sheet

NOTE: Do not net or combine items. Show all expenses individually and all credits as separate line items. Claim packages are due on the remittance report date. Late submissions may result in claims not being passed until the following month. The Servicer is responsible to remit all funds pending loss approval and /or resolution of any disputed items.

(a)

(b) The numbers on the 332 form correspond with the numbers listed below.

Liquidation and Acquisition Expenses:

The Actual Unpaid Principal Balance of the Mortgage Loan. For documentation, an Amortization Schedule from date of default through liquidation breaking out the net interest and servicing fees advanced is required.

The Total Interest Due less the aggregate amount of servicing fee that would have been earned if all delinquent payments had been made as agreed. For documentation, an Amortization Schedule from date of default through liquidation breaking out the net interest and servicing fees advanced is required.

Accrued Servicing Fees based upon the Scheduled Principal Balance of the Mortgage Loan as calculated on a monthly basis. For documentation, an Amortization Schedule from date of default through liquidation breaking out the net interest and servicing fees advanced is required.

4-12.

Complete as applicable. Required documentation:

* For taxes and insurance advances – see page 2 of 332 form - breakdown required showing period

of coverage, base tax, interest, penalty. Advances prior to default require evidence of servicer efforts to recover advances.

* For escrow advances - complete payment history

(to calculate advances from last positive escrow balance forward)

* Other expenses - copies of corporate advance history showing all payments

* REO repairs> $1500 require explanation

* REO repairs>$3000 require evidence of at least 2 bids.

* Short Sale or Charge Off require P&L supporting the decision and WFB’s approved Officer Certificate

* Unusual or extraordinary items may require further documentation.

13.

The total of lines 1 through 12.

14-21.

Complete as applicable. Required documentation:

* Copy of the HUD 1 from the REO sale. If a 3^rd Party Sale, bid instructions and Escrow Agent / Attorney

Letter of Proceeds Breakdown.

* Copy of EOB for any MI or gov't guarantee

* All other credits need to be clearly defined on the 332 form

22.

The total of lines 14 through 21.

Please Note:

For HUD/VA loans, use line (18a) for Part A/Initial proceeds and line (18b) for Part B/Supplemental proceeds.

Total Realized Loss (or Amount of Any Gain)

23.

The total derived from subtracting line 22 from 13. If the amount represents a realized gain, show the amount in parenthesis ( ).

Exhibit IIE: Calculation of Realized Loss/Gain Form 332

Prepared by: __________________ Date: _______________

Phone: ______________________ Email Address:_____________________

Servicer Loan No.

Servicer Name

Servicer Address

XXXXX FARGO BANK, N.A. Loan No._____________________________

Borrower's Name: _________________________________________________________

Property Address: _________________________________________________________

Liquidation Type: REO Sale 3^rd Party Sale Short Sale Charge Off

Was this loan granted a Bankruptcy deficiency or cramdown Yes No

If “Yes”, provide deficiency or cramdown amount _______________________________

Liquidation and Acquisition Expenses:
(1)	Actual Unpaid Principal Balance of Mortgage Loan	$	(1)
(2)	Interest accrued at Net Rate		(2)
(3)	Accrued Servicing Fees		(3)
(4)	Attorney's Fees		(4)
(5)	Taxes (see page 2)		(5)
(6)	Property Maintenance		(6)
(7)	MI/Hazard Insurance Premiums (see page 2)		(7)
(8)	Utility Expenses		(8)
(9)	Appraisal/BPO		(9)
(10)	Property Inspections		(10)
(11)	FC Costs/Other Legal Expenses		(11)
(12)	Other (itemize)		(12)
	Cash for Keys__________________________		(12)
	HOA/Condo Fees_______________________		(12)
	______________________________________		(12)

	Total Expenses	$	(13)
Credits:
(14)	Escrow Balance	$	(14)
(15)	HIP Refund		(15)
(16)	Rental Receipts		(16)
(17)	Hazard Loss Proceeds		(17)
(18)	Primary Mortgage Insurance / Gov’t Insurance		(18a) HUD Part A
			(18b) HUD Part B

(19)	Pool Insurance Proceeds		(19)
(20)	Proceeds from Sale of Acquired Property		(20)
(21)	Other (itemize)		(21)
	_________________________________________		(21)

	Total Credits	$	(22)
Total Realized Loss (or Amount of Gain)		$	(23)

Escrow Disbursement Detail

Type (Tax /Ins.)	Date Paid	Period of Coverage	Total Paid	Base Amount	Penalties	Interest

EXHIBIT III

FORM OF ANNUAL CERTIFICATION

Re: The [ ] agreement dated as of [ ], 200[ ] (the “Agreement”), among

[IDENTIFY PARTIES]

I, ________________________________, the _____________________ of Wachovia Mortgage Corporation, certify to [the Purchaser], [the Depositor], and the [Master Servicer] [Securities Administrator] [Trustee], and their officers, with the knowledge and intent that they will rely upon this certification, that:

(1) I have reviewed the servicer compliance statement of the Company provided in accordance with Item 1123 of Regulation AB (the “Compliance Statement”), the report on assessment of the Company’s compliance with the servicing criteria set forth in Item 1122(d) of Regulation AB and identified as the responsibility of the Company on Exhibit B to the Regulation AB Compliance Addendum to the Agreement (the “Servicing Criteria”), provided in accordance with Rules 13a-18 and 15d-18 under Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Item 1122 of Regulation AB (the “Servicing Assessment”), the registered public accounting firm’s attestation report provided in accordance with Rules 13a-18 and 15d-18 under the Exchange Act and Section 1122(b) of Regulation AB (the “Attestation Report”), and all servicing reports, officer’s certificates and other information relating to the servicing of the Mortgage Loans by the Company during 200[ ] that were delivered by the Company to the [Depositor] [Master Servicer] [Securities Administrator] [Trustee] pursuant to the Agreement (collectively, the “Company Servicing Information”);

(2) Based on my knowledge, the Company Servicing Information, taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in the light of the circumstances under which such statements were made, not misleading with respect to the period of time covered by the Company Servicing Information;

(3) Based on my knowledge, all of the Company Servicing Information required to be provided by the Company under the Agreement has been provided to the [Depositor] [Master Servicer] [Securities Administrator] [Trustee];

(4) I am responsible for reviewing the activities performed by the Company as servicer under the Agreement, and based on my knowledge and the compliance review conducted in preparing the Compliance Statement and except as disclosed in the Compliance Statement, the Servicing Assessment or the Attestation Report, the Company has fulfilled its obligations under the Agreement in all material respects; and

(5) The Compliance Statement required to be delivered by the Company pursuant to the Agreement, and the Servicing Assessment and Attestation Report required to be provided by the Company and by any Subservicer and Subcontractor pursuant to the Agreement, have been provided to the [Depositor] [Master Servicer]. Any material instances of noncompliance described in such reports have been disclosed to the [Depositor] [Master Servicer]. Any material instance of noncompliance with the Servicing Criteria has been disclosed in such reports.

Date: ______________________________________

By:_______________________________________

Name:

Title:

EXHIBIT IV

SERVICING CRITERIA TO BE ADDRESSED IN ASSESSMENT OF COMPLIANCE

The assessment of compliance to be delivered by [the Company] [Name of Subservicer] shall address, at a minimum, the criteria identified as below as “Applicable Servicing Criteria”;

*Servicing Criteria*		*Applicable* *Servicing* *Criteria*
Reference	Criteria
	General Servicing Considerations
	Policies and procedures are instituted to monitor any performance or other triggers and events of default in accordance with the transaction agreements.	X
1122(d)(1)(i)		X
122(d)(1)(ii)	If any material servicing activities are outsourced to third parties, policies and procedures are instituted to monitor the third party’s performance and compliance with such servicing activities.	X
1122(d)(1)(iii)	Any requirements in the transaction agreements to maintain a back-up servicer for the mortgage loans are maintained.
1122(d)(1)(iv)	A fidelity bond and errors and omissions policy is in effect on the party participating in the servicing function throughout the reporting period in the amount of coverage required by and otherwise in accordance with the terms of the transaction agreements.	X
	Cash Collection and Administration
1122(d)(2)(i)	Payments on mortgage loans are deposited into the appropriate custodial bank accounts and related bank clearing accounts no more than two business days following receipt, or such other number of days specified in the transaction agreements.	X
1122(d)(2)(ii)	Disbursements made via wire transfer on behalf of an obligor or to an investor are made only by authorized personnel.	X
1122(d)(2)(iii)	Advances of funds or guarantees regarding collections, cash flows or distributions, and any interest or other fees charged for such advances, are made, reviewed and approved as specified in the transaction agreements.	X

*Servicing Criteria*		*Applicable* *Servicing* *Criteria*
Reference	Criteria

1122(d)(2)(iv)	The related accounts for the transaction, such as cash reserve accounts or accounts established as a form of overcollateralization, are separately maintained (e.g., with respect to commingling of cash) as set forth in the transaction agreements.	X
1122(d)(2)(v)	Each custodial account is maintained at a federally insured depository institution as set forth in the transaction agreements. For purposes of this criterion, “federally insured depository institution” with respect to a foreign financial institution means a foreign financial institution that meets the requirements of Rule 13k-1 (b)(1) of the Securities Exchange Act.	X
1122(d)(2)(vi)	Unissued checks are safeguarded so as to prevent unauthorized access.	X
1122(d)(2)(vii)	Reconciliations are prepared on a monthly basis for all asset-backed securities related bank accounts, including custodial accounts and related bank clearing accounts. These reconciliations are (A) mathematically accurate; (B) prepared within 30 calendar days after the bank statement cutoff date, or such other number of days specified in the transaction agreements; (C) reviewed and approved by someone other than the person who prepared the reconciliation; and (D) contain explanations for reconciling items. These reconciling items are resolved within 90 calendar days of their original identification, or such other number of days specified in the transaction agreements.	X
	Investor Remittances and Reporting
1122(d)(3)(i)	Reports to investors, including those to be filed with the Commission, are maintained in accordance with the transaction agreements and applicable Commission requirements. Specifically, such reports (A) are prepared in accordance with timeframes and other terms set forth in the transaction agreements; (B) provide information calculated in accordance with the terms specified in the transaction agreements; (C) are filed with the Commission as required by its rules and regulations; and (D) agree with investors’ or the trustee’s records as to the total unpaid principal balance and number of mortgage loans serviced by the Servicer.	X
1122(d)(3)(ii)	Amounts due to investors are allocated and remitted in accordance with timeframes, distribution priority and other terms set forth in the transaction agreements.	X
1122(d)(3)(iii)	Disbursements made to an investor are posted within two business days to the Servicer’s investor records, or such other number of days specified in the transaction agreements.	X

*Servicing Criteria*		*Applicable* *Servicing* *Criteria*
Reference	Criteria

1122(d)(3)(iv)	Amounts remitted to investors per the investor reports agree with cancelled checks, or other form of payment, or custodial bank statements.	X
	Pool Asset Administration
1122(d)(4)(i)	Collateral or security on mortgage loans is maintained as required by the transaction agreements or related mortgage loan documents.	X
1122(d)(4)(ii)	Mortgage loan and related documents are safeguarded as required by the transaction agreements	X
1122(d)(4)(iii)	Any additions, removals or substitutions to the asset pool are made, reviewed and approved in accordance with any conditions or requirements in the transaction agreements.	X
1122(d)(4)(iv)	Payments on mortgage loans, including any payoffs, made in accordance with the related mortgage loan documents are posted to the Servicer’s obligor records maintained no more than two business days after receipt, or such other number of days specified in the transaction agreements, and allocated to principal, interest or other items (e.g., escrow) in accordance with the related mortgage loan documents.	X
1122(d)(4)(v)	The Servicer’s records regarding the mortgage loans agree with the Servicer’s records with respect to an obligor’s unpaid principal balance.	X
1122(d)(4)(vi)	Changes with respect to the terms or status of an obligor’s mortgage loans (e.g., loan modifications or re-agings) are made, reviewed and approved by authorized personnel in accordance with the transaction agreements and related pool asset documents.	X
1122(d)(4)(vii)	Loss mitigation or recovery actions (e.g., forbearance plans, modifications and deeds in lieu of foreclosure, foreclosures and repossessions, as applicable) are initiated, conducted and concluded in accordance with the timeframes or other requirements established by the transaction agreements.	X

*Servicing Criteria*		*Applicable* *Servicing* *Criteria*
Reference	Criteria

1122(d)(4)(viii)	Records documenting collection efforts are maintained during the period a mortgage loan is delinquent in accordance with the transaction agreements. Such records are maintained on at least a monthly basis, or such other period specified in the transaction agreements, and describe the entity’s activities in monitoring delinquent mortgage loans including, for example, phone calls, letters and payment rescheduling plans in cases where delinquency is deemed temporary (e.g., illness or unemployment).	X
1122( d)( 4 )(ix)	Adjustments to interest rates or rates of return for mortgage loans with variable rates are computed based on the related mortgage loan documents.	X
1122( d)( 4 )(x)	Regarding any funds held in trust for an obligor (such as escrow accounts): (A) such funds are analyzed, in accordance with the obligor’s mortgage loan documents, on at least an annual basis, or such other period specified in the transaction agreements; (B) interest on such funds is paid, or credited, to obligors in accordance with applicable mortgage loan documents and state laws; and (C) such funds are returned to the obligor within 30 calendar days of full repayment of the related mortgage loans, or such other number of days specified in the transaction agreements.	X
1122( d)( 4 )(xi)	Payments made on behalf of an obligor (such as tax or insurance payments) are made on or before the related penalty or expiration dates, as indicated on the appropriate bills or notices for such payments, provided that such support has been received by the servicer at least 30calendar days prior to these dates, or such other number of days specified in the transaction agreements.	X
1122(d)(4)(xii)	Any late payment penalties in connection with any payment to be made on behalf of an obligor are paid from the servicer’s funds and not charged to the obligor, unless the late payment was due to the obligor’s error or omission.	X
1122(d)(4)(xiii)	Disbursements made on behalf of an obligor are posted within two business days to the obligor’s records maintained by the servicer, or such other number of days specified in the transaction agreements.	X
1122(d)(4)(xiv)	Delinquencies, charge-offs and uncollectible accounts are recognized and recorded in accordance with the transaction agreements.	X

*Servicing Criteria*		*Applicable* *Servicing* *Criteria*
Reference	Criteria

1122(d)(4)(xv)

Any external enhancement or other support, identified in Item 1114(a)(1) through (3) or Item 1115 of Regulation AB, is maintained as set forth in the transaction agreements.

[INDYMAC BANK, F.S.B.]

[NAME OF SUBSERVICER]

Date:________________________________

By: _________________________________

Name:

Title:

EXHIBIT V

Additional Disclosure Notification

Xxxxx Fargo Bank, N.A. as [Securities Administrator and Master Servicer]

9000 Xxx Xxxxxxxxx Xxxx

Xxxxxxxx, Xxxxxxxx 00000

Fax: (000) 000-0000

E-mail: xxx.xxx.xxxxxxxxxxxxx@xxxxxxxxxx.xxx

Attn: Corporate Trust Services – MSM 2007-15AR - SEC REPORT PROCESSING

RE: **Additional Form [ ] Disclosure**Required

Ladies and Gentlemen:

In accordance with Section [13.03(d)][13.03(e)][13.03(g)] of the Servicing Agreement, dated as of September 1, 2006, as amended by the Assignment, Assumption and Recognition Agreement dated as of November 1, 2007, among Xxxxxx Xxxxxxx Capital I Inc., as Depositor, IndyMac Bank, F.S.B., Xxxxx Fargo Bank, National Association, as Master Servicer, and LaSalle Bank National Association as Trustee, the Undersigned hereby notifies you that certain events have come to our attention that [will][may] need to be disclosed on Form [ ].

Description of Additional Form [ ] Disclosure:

List of Any Attachments hereto to be included in the Additional Form [ ] Disclosure:

Any inquiries related to this notification should be directed to [ ], phone number: [ ]; email address: [ ].

[NAME OF PARTY]

as [role]

By: __________________

Name:

Title:

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ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT

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