ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT

EXECUTION COPY

This Assignment, Assumption and Recognition Agreement (the “AAR Agreement”) is made and entered into as of September 29, 2006 (the “Closing Date”), among DB Structured Products, Inc., having an address at 00 Xxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000 (the “Assignor”), Deutsche Alt-A Securities, Inc., having an address at 00 Xxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000 (the “Assignee”), and GMAC Mortgage Corporation, having an address at 000 Xxxxxx Xxxx, Xxxxxxx, Xxxxxxxxxxxx 00000 (the “Company” or the “Servicer”) and acknowledged and agreed to by Xxxxx Fargo Bank, N.A., as master servicer (the “Master Servicer”).

In consideration of the mutual promises contained herein the parties hereto agree that the residential mortgage loans listed on Attachment 1 annexed hereto (the “Assigned Loans”), which are now serviced by the Company on behalf of the Assignor and its successors and assigns pursuant to the Servicing Agreement, dated as of April 1, 2004, between the Assignor and the Company, as amended by Amendment Number One, dated as of January 31, 2006, the “Servicing Agreement”), shall be sold by the Assignor to the Assignee pursuant to the Mortgage Loan Purchase Agreement, dated as of September 29, 2006 (the “MLPA”), between the Assignor and the Assignee and subject to the terms of this AAR Agreement. The Assignee intends to transfer all right, title and interest in and to the Assigned Loans to HSBC Bank USA, National Association, as trustee (the “Trustee”) for the holders of Deutsche Alt-B Securities Mortgage Loan Trust, Series 2006-AB4 Mortgage Pass-Through Certificates (the “Certificateholders”) and Financial Security Assurance, Inc. (the “Insurer”) pursuant to the Pooling and Servicing Agreement, dated as of September 1, 2006 (the “Pooling and Servicing Agreement”) among the Assignee, as depositor, the Trustee, as trustee and Xxxxx Fargo Bank, N.A., as master servicer (the “Master Servicer”) and as securities administrator. Capitalized terms used herein but not defined shall have the meanings ascribed to them in the Servicing Agreement.

Assignment and Assumption

1. Assignor hereby grants, transfers and assigns to Assignee all of the right, title and interest of Assignor in, to and under the Servicing Agreement as it relates to the servicing of the Assigned Loans. Assignor specifically reserves and does not assign to Assignee any right, title and interest in, to or under the Servicing Agreement, as it relates to loans other than the Assigned Loans set forth on Attachment 1. Notwithstanding anything to the contrary contained herein, the Assignor specifically reserves and does not assign to the Assignee any right, title and interest in, to or under the representations and warranties contained in Section 3.01 of the Servicing Agreement and the Assignor is retaining the right to enforce the representations and warranties set forth in Article III of the Servicing Agreement against the Company.

Representations, Warranties and Covenants

2. Assignor warrants and represents to Assignee and Company as of the date hereof:

(a) Attached hereto as Attachment 2 is a true and accurate copy of the Servicing Agreement, which agreement is in full force and effect as of the date hereof and the provisions of which have not been waived, amended or modified in any respect, nor has any notice of termination been given thereunder;

(b) Assignor is the lawful owner of the Assigned Loans with full right to transfer the Assigned Loans and any and all of its interests, rights and obligations under the Servicing Agreement as they relate to the Assigned Loans, free and clear from any and all claims and encumbrances; and upon the transfer of the Assigned Loans to Assignee under the MLPA, Assignee shall have good title to each and every Assigned Loan, as well as any and all of Assignor’s interests, rights and obligations under the Servicing Agreement as they relate to the Assigned Loans, free and clear of any and all liens, claims and encumbrances;

(c) There are no offsets, counterclaims or other defenses available to Company with respect to the Assigned Loans or the Servicing Agreement;

(d) Assignor has no knowledge of, and has not received notice of, any waivers under, or any modification of, any Assigned Loan;

(e) Assignor is duly organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation, and has all requisite power and authority to acquire, own and sell the Assigned Loans;

(f) Assignor has full corporate power and authority to execute, deliver and perform its obligations under this AAR Agreement, and to consummate the transactions set forth herein. The consummation of the transactions contemplated by this AAR Agreement is in the ordinary course of Assignor’s business and will not conflict with, or result in a breach of, any of the terms, conditions or provisions of Assignor’s articles of incorporation or by-laws or any legal restriction, or any material agreement or instrument to which Assignor is now a party or by which it is bound, or result in the violation of any law, rule, regulation, order, judgment or decree to which Assignor or its property is subject. The execution, delivery and performance by Assignor of this AAR Agreement and the consummation by it of the transactions contemplated hereby, have been duly authorized by all necessary corporate action on the part of Assignor. This AAR Agreement has been duly executed and delivered by Assignor and, upon the due authorization, execution and delivery by Assignee and Company, will constitute the valid and legally binding obligation of Assignor enforceable against Assignor in accordance with its terms except as enforceability may be limited by bankruptcy, reorganization, insolvency, moratorium or other similar laws now or hereafter in effect relating to creditors’ rights generally, and by general principles of equity regardless of whether enforceability is considered in a proceeding in equity or at law; and

(g) No consent, approval, order or authorization of, or declaration, filing or registration with, any governmental entity is required to be obtained or made by Assignor in connection with the execution, delivery or performance by Assignor of this AAR Agreement, or the consummation by it of the transactions contemplated hereby. Neither Assignor nor anyone acting on its behalf has offered, transferred, pledged, sold or otherwise disposed of the Assigned Loans or any interest in the Assigned Loans, or solicited any offer to buy or accept a transfer, pledge or other disposition of the Assigned Loans, or any interest in the Assigned Loans or otherwise approached or negotiated with respect to the Assigned Loans, or any interest in the Assigned Loans with any Person in any manner, or made any general solicitation by means of general advertising or in any other manner, or taken any other action, which would constitute a distribution of the Assigned Loans under the Securities Act of 1933, as amended (the “1933 Act”) or which would render the disposition of the Assigned Loans a violation of Section 5 of the 1933 Act or require registration pursuant thereto.

3. Assignee warrants and represents to, and covenants with, Assignor and Company as of the date hereof:

(a) Assignee is duly organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation and has all requisite power and authority to acquire, own and purchase the Assigned Loans;

(b) Assignee has full corporate power and authority to execute, deliver and perform its obligations under this AAR Agreement, and to consummate the transactions set forth herein. The consummation of the transactions contemplated by this AAR Agreement is in the ordinary course of Assignee’s business and will not conflict with, or result in a breach of, any of the terms, conditions or provisions of Assignee’s articles of incorporation or by-laws or any legal restriction, or any material agreement or instrument to which Assignee is now a party or by which it is bound, or result in the violation of any law, rule, regulation, order, judgment or decree to which Assignee or its property is subject. The execution, delivery and performance by Assignee of this AAR Agreement and the consummation by it of the transactions contemplated hereby, have been duly authorized by all necessary corporate action on the part of Assignee. This AAR Agreement has been duly executed and delivered by Assignee and, upon the due authorization, execution and delivery by Assignor and Company, will constitute the valid and legally binding obligation of Assignee enforceable against Assignee in accordance with its terms except as enforceability may be limited by bankruptcy, reorganization, insolvency, moratorium or other similar laws now or hereafter in effect relating to creditors’ rights generally, and by general principles of equity regardless of whether enforceability is considered in a proceeding in equity or at law;

(c) No consent, approval, order or authorization of, or declaration, filing or registration with, any governmental entity is required to be obtained or made by Assignee in connection with the execution, delivery or performance by Assignee of this AAR Agreement, or the consummation by it of the transactions contemplated hereby; and

(d) Assignee agrees to be bound by all of the terms, covenants and conditions of the Servicing Agreement with respect to the Assigned Loans, and from and after the date hereof, Assignee assumes for the benefit of each of Assignor and Company all of Assignor’s obligations thereunder but solely with respect to such Assigned Loans.

4. Company warrants and represents to, and covenants with, Assignor and Assignee (unless otherwise specified) as of the date hereof:

(b) Company is duly organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation, and has all requisite power and authority to service the Assigned Loans and otherwise to perform its obligations under the Servicing Agreement;

(c) Company has full corporate power and authority to execute, deliver and perform its obligations under this AAR Agreement, and to consummate the transactions set forth herein. The consummation of the transactions contemplated by this AAR Agreement is in the ordinary course of Company’s business and will not conflict with, or result in a breach of, any of the terms, conditions or provisions of Company’s articles of incorporation or by-laws or any legal restriction, or any material agreement or instrument to which Company is now a party or by which it is bound, or result in the violation of any law, rule, regulation, order, judgment or decree to which Company or its property is subject. The execution, delivery and performance by Company of this AAR Agreement and the consummation by it of the transactions contemplated hereby, have been duly authorized by all necessary corporate action on the part of Company. This AAR Agreement has been duly executed and delivered by Company, and, upon the due authorization, execution and delivery by Assignor and Assignee, will constitute the valid and legally binding obligation of Company, enforceable against Company in accordance with its terms except as enforceability may be limited by bankruptcy, reorganization, insolvency, moratorium or other similar laws now or hereafter in effect relating to creditors’ rights generally, and by general principles of equity regardless of whether enforceability is considered in a proceeding in equity or at law;

(d) No consent, approval, order or authorization of, or declaration, filing or registration with, any governmental entity is required to be obtained or made by Company in connection with the execution, delivery or performance by Company of this AAR Agreement, or the consummation by it of the transactions contemplated hereby; and

(e) From and after the Closing Date, the Company shall service the Assigned Loans in accordance with the terms and provisions of the Servicing Agreement, as modified by this AAR Agreement, and the Company shall establish a Custodial Account and an Escrow Account under the Servicing Agreement with respect to the Assigned Loans separate from the Custodial Account and Escrow Account previously established under the Servicing Agreement in favor of Assignor, and shall remit collections received. The Custodial Account and Escrow Account shall be entitled “GMAC Mortgage Corporation, as Servicer in trust for Deutsche Alt-B Securities Mortgage Loan Trust, Series 2006-AB4”.

Recognition of Assignee.

5. From and after the date hereof, Company shall recognize Assignee as owner of the Assigned Loans, and acknowledges that the Assigned Loans will be part of a REMIC, and will service the Assigned Loans in accordance with the Servicing Agreement, as modified by this AAR Agreement, but in no event in a manner that would (i) cause any REMIC to fail to qualify as a REMIC or (ii) result in the imposition of a tax upon any REMIC (including but not limited to the tax on prohibited transactions as defined in Section 860F(a)(2) of the Code and the tax on contributions to a REMIC set forth in Section 860G(d) of the Code). It is the intention of Assignor, Company and Assignee that this AAR Agreement shall be binding upon and for the benefit of the respective successors and assigns of the parties hereto. Neither Company nor Assignor shall amend or agree to amend, modify, waive, or otherwise alter any of the terms or provisions of the Servicing Agreement which amendment, modification, waiver or other alteration would in any way affect the Assigned Loans without the prior written consent of the Trustee and the Master Servicer and the Insurer. Company hereby acknowledges that pursuant to the Pooling and Servicing Agreement, the Assignee will assign all of its rights under this AAR Agreement to the Trustee for the benefit of the Certificateholders and the Insurer. Company hereby acknowledges and consents to the assignment by the Assignee of all of the Assignee’s rights against the Company pursuant to this AAR Agreement and to the enforcement or exercise of any right or remedy against the Company pursuant to this AAR Agreement by the Trustee.

Modification of Servicing Agreement

6. The Company and Assignor hereby modify the Servicing Agreement with respect to the Assigned Loans as follows:

(a) The following definitions in Section 1.01 of the Servicing Agreement are hereby modified by deleting each definition in its entirety and replacing it with the following:

Business Day: Any day other than (i) a Saturday or Sunday, or (ii) a legal holiday in the States of New York, Maryland, Minnesota, Iowa or the Commonwealth of Pennsylvania, or (iii) a day on which banks in the States of New York, Iowa, Maryland or Pennsylvania are authorized or obligated by law or executive order to be closed.

Master Servicer: Xxxxx Fargo Bank, N.A., its successors and assigns.

Mortgage Loan Remittance Rate: With respect to each Mortgage Loan, the annual rate of interest remitted to the Owner, which shall be equal to the related Mortgage Interest Rate minus (i) the Servicing Fee Rate and (ii) the Lender-Paid Mortgage Insurance Rate, if applicable.

Servicing Fee Rate: The Servicing Fee Rate shall be 0.25% per annum.

(b) The following definitions in Section 1.01 are added to the Servicing Agreement:

Principal Prepayment Period: The month preceding the month in which the related Remittance Date occurs.

Trustee: HSBC Bank USA, National Association, its successors and assigns.

(c) The Servicing Agreement is amended by deleting the definitions of “Excess Servicing Fee” and “Excess Servicing Fee Rate” in Section 1.01 thereof.

(d) The definition of “Servicing Rights” in Section 1.01 of the Servicing Agreement is modified by deleting the phrase “including without limitation any late fees, assumption fees, penalties and Prepayment Charges to the extent set forth in the related Confirmation” in subpart (b) and replacing such phrase with “including without limitation any late fees, assumption fees and penalties”.

(e) Section 4.01 of the Servicing Agreement is modified by deleting the phrase “unless the Servicer has obtained the prior written consent of the Owner,” from the second paragraph thereof.

(f) Section 4.01 of the Servicing Agreement is modified by deleting the third paragraph in its entirety and replacing it with the following:

“Notwithstanding anything in this Agreement to the contrary, in the event of a Principal Prepayment in full or in part of a Mortgage Loan, the Servicer may not waive any Prepayment Charge or portion thereof required by the terms of the related Mortgage Note unless (i) the Servicer determines that such waiver would maximize recovery of Liquidation Proceeds for such Mortgage Loan, taking into account the value of such Prepayment Charge and the Mortgage Loan, and the waiver of such Prepayment Charge is standard and customary in servicing similar Mortgage Loans (including the waiver of a Prepayment Charge in connection with a refinancing of the Mortgage Loan related to a default or a reasonably foreseeable default) or (ii) (A) the enforceability thereof is limited (1) by bankruptcy, insolvency, moratorium, receivership, or other similar law relating to creditors’ rights or (2) due to acceleration in connection with a foreclosure or other involuntary payment, or (B) the enforceability is otherwise limited or prohibited by subsequent changes in applicable law. In no event shall the Servicer waive a Prepayment Charge in connection with a refinancing of a Mortgage Loan that is not related to a default or a reasonably foreseeable default. If the Servicer waives or does not collect all or a portion of a Prepayment Charge relating to a Principal Prepayment in full or in part due to any action or omission of the Servicer, other than as provided above, the Servicer shall deposit the amount of such Prepayment Charge (or such portion thereof as had been waived for deposit) into the Custodial Account at the time of such prepayment for distribution in accordance with the terms of this Agreement.”

(g) Section 4.04 of the Servicing Agreement is modified by deleting the first paragraph in its entirety and replacing it with the following:

“The Servicer shall segregate and hold all funds collected and received pursuant to each Mortgage Loan separate and apart from any of its own funds and general assets and shall establish and maintain one or more Custodial Accounts. Each Custodial Account shall be established with a Qualified Depository. To the extent such funds are not deposited in a Custodial Account, such funds may be invested in Permitted Investments for the benefit of the Owner (with any income earned thereon for the benefit of the Servicer); provided, however, that any such funds which are invested in such Permitted Investments shall be deemed to be deposited in the Custodial Account for the purpose of calculating remittances pursuant to Section 5.01 of this Agreement. All investments pursuant to this Section 4.04 shall be in one or more Permitted Investments bearing interest or sold at a discount, and maturing, unless payable on demand, no later than the Business Day immediately preceding the Remittance Date. All income and gain realized from the investment of funds deposited in the Custodial Account held by or on behalf of the Servicer shall be for the benefit of the Servicer and shall be subject to its withdrawal in accordance with Section 4.05. The Servicer shall deposit in the Custodial Account the amount of any loss incurred in respect of any such Permitted Investment immediately upon realization of such loss. Funds deposited in the Custodial Account may be drawn on by the Servicer in accordance with Section 4.05. The creation of any Custodial Account shall be evidenced by a letter agreement in the form shown in Exhibit B hereto. The original of such letter agreement shall be furnished to the Owner on the initial Servicing Transfer Date. The Servicer shall give notice to the Owner prior to any change of the location of the Custodial Account. The Servicer acknowledges and agrees that the Servicer shall bear any losses incurred with respect to Permitted Investments. The amount of any such losses shall be immediately deposited by the Servicer in the Custodial Account, as appropriate, out of the Servicer’s own funds, with no right to reimbursement therefor.”

(h) Section 4.05(ii) of the Servicing Agreement is modified by deleting “and Excess Servicing Fee if applicable” from the first parenthetical.

(i) Section 4.05(iv) of the Servicing Agreement is modified by deleting “and Excess Servicing Fee” from the clause.

(j) Section 5.02 of the Servicing Agreement is modified by replacing the first paragraph therein and replacing it with the following:

The Servicer shall furnish to the Master Servicer an individual Mortgage Loan accounting report (a “Report”), as of the last Business Day of each month, in the Servicer’s assigned loan number order to document Mortgage Loan payment activity on an individual Mortgage Loan basis. With respect to each month, such Report shall be received by the Master Servicer no later than the tenth (10th) calendar day of the following month of the related Due Period on a disk or tape or other computer-readable format, in the format set forth in Exhibit E of the Servicing Agreement (or in such other format mutually agreed to between the Servicer and the Master Servicer), which Report shall contain but not necessarily be limited to, the following:

(k) Section 6.03(a) of the Servicing Agreement is modified by deleting the words “and Excess Servicing Fee if applicable” from the subsection.

(l) Section 6.04 of the Servicing Agreement is modified by deleting the section in its entirety and replacing it with the following:

Section 6.04 Reserved.

(m) Section 6.10 of the Servicing Agreement is modified by adding the following paragraph at the end thereof:

The Servicer shall not permit the creation of any “interests” (within the meaning of Section 860G of the Code) in the REMIC. The Servicer shall not enter into any arrangement by which the REMIC will receive a fee or other compensation for services nor permit the REMIC to receive any income from assets other than “qualified mortgages” as defined in Section 860G(a)(3) of the Code or “permitted investments” as defined in Section 860G(a)(5) of the Code.

(n)Section 9.01(ix) of the Servicing Agreement is modified by deleting the subsection in its entirety.

(o) The Servicing Agreement is modified by adding the following section after Section

11.17:

Section 11.18 Third Party Beneficiary.

For purposes of this Agreement, the Master Servicer shall be considered a third party beneficiary to this Agreement entitled to all the rights and benefits accruing to the Master Servicer herein as if it were a direct party to this Agreement.

(p) Exhibit E is modified to include the information set forth on Attachment 3 hereto.

7. Prepayment Penalty Verification.

For each month in which the Company is servicing the Assigned Loans, on or prior to each Determination Date, Company shall provide in an electronic format acceptable to the Master Servicer the data necessary for the Master Servicer to perform its verification duties agreed to by the Master Servicer and the Assignee. The Master Servicer or a third party reasonably acceptable to the Master Servicer and the Assignee (the “Verification Agent”) will perform such verification duties and will use its best efforts to issue its findings in a report (the “Verification Report”) delivered to the Master Servicer and the Assignee within ten (10) Business Days following the related Remittance Date; provided, however, that if the Verification Agent is unable to issue the Verification Report within ten (10) Business Days following the Remittance Date, the Verification Agent may issue and deliver to the Master Servicer and the Assignee the Verification Report upon the completion of its verification duties. The Master Servicer shall forward the Verification Report to the Company and shall notify the Company if the Master Servicer has determined that the Company did not deliver the appropriate Prepayment Charges to the Master Servicer in accordance with this AAR Agreement. Such written notification from the Master Servicer shall include the loan number, prepayment penalty code and prepayment penalty amount as calculated by the Master Servicer or the Verification Agent, as applicable, of each Assigned Loan for which there is a discrepancy. If the Company agrees with the verified amounts, the Company shall adjust the immediately succeeding remittance report and the amount remitted to the Master Servicer with respect to prepayments accordingly. If the Company disagrees with the determination of the Master Servicer, the Company shall, within five (5) Business Days of its receipt of the Verification Report, notify the Master Servicer of such disagreement and provide the Master Servicer with detailed information to support the Company’s position. The Company and the Master Servicer shall cooperate to resolve any discrepancy on or prior to the immediately succeeding Remittance Date, and the Company will indicate the effect of such resolution on the related remittance report and shall adjust the amount remitted with respect to prepayments on such Remittance Date accordingly.

During such time as the Company and the Master Servicer are resolving discrepancies with respect to the Prepayment Charges, no payments in respect of any disputed Prepayment Charges will be remitted to the related distribution account established under the Pooling and Servicing Agreement and the Master Servicer shall not be obligated to remit such payments, unless otherwise required pursuant to the Pooling and Servicing Agreement. In connection with such duties, the Master Servicer shall be able to rely solely on the information provided to it by the Company in accordance with this Section 7. The Master Servicer shall not be responsible for verifying the accuracy of any of the information provided to it by the Company.

8. Indemnification.

The Servicer shall indemnify the Master Servicer, the Assignor, the Assignee, the Trustee, the Insurer and their respective officers, directors, employees, agents and affiliates (any such person, an “Indemnified Party”), and shall hold each of them harmless from and against any claims, losses, damages, penalties, fines, forfeitures, legal fees and expenses and related costs, judgments, and any other costs, fees and expenses that any of them may sustain arising out of or based upon (i) any breach by the Servicer of its obligations under Article XIV of the Agreement, including particularly any failure by the Servicer, any Subservicer or Subcontractor to deliver any information, report, certification, accountants’ letter or other material when and as required under Article XIV of the Agreement, including any failure by the Servicer to identify pursuant to Section 14.06(b) of the Agreement any Subcontractor “participating in the servicing function” within the meaning of Item 1122 of Regulation AB; (ii) any material misstatement or omission in any written information, written data or materials provided by the Servicer, any Subservicer or Subcontractor as required under Article XIV of the Agreement, or (iii) the negligence, bad faith or willful misconduct of the Servicer in connection therewith. If the indemnification provided for herein is unavailable or insufficient to hold harmless any Indemnified Party, then the Servicer agrees that it shall contribute to the amount paid or payable by the Indemnified Party as a result of the losses, claims, damages or liabilities of the Indemnified Party in such proportion as is appropriate to reflect the relative fault of the Indemnified Party on the one hand and the Servicer in the other in connection therewith.

Miscellaneous

Notwithstanding anything to the contrary herein, the Company’s obligation to deliver any reports, certificates or other documents to the Master Servicer, including, but not limited to, the reports and certificates set forth in Section 6 of this AAR Agreement, shall survive the termination or expiration of this AAR Agreement.

10.

All demands, notices and communications related to the Assigned Loans, the Servicing Agreement and this AAR Agreement shall be in writing and shall be deemed to have been duly given if personally delivered at or mailed by registered mail, postage prepaid, as follows:

(a) In the case of Company,

GMAC Mortgage Corporation
000 Xxxxxx Xxxx
Xxxxxxx, Xxxxxxxxxxxx 00000
Attention: Executive Vice President, National Loan Administration

(b) In the case of Assignor,

DB Structured Products, Inc.

00 Xxxx Xxxxxx Xxx Xxxx, Xxx Xxxx 00000

Attention: Xxxxx Xxxxxxx

Deutsche Alt-A Securities, Inc. c/o Deutsche Bank Securities, Inc.

00 Xxxx Xxxxxx Xxx Xxxx, Xxx Xxxx 00000

Attention: Xxxxx Xxxxxxx

(d) In the case of the Master Servicer,

Xxxxx Fargo Bank, N.A.

0000 Xxx Xxxxxxxxx Xxxx Xxxxxxxx, Xxxxxxxx 00000

Attention: Client Manager – DBALT 2006-AB4

Telecopier: (000) 000-0000

11.

Each party will pay any commissions it has incurred and the Assignor shall pay the fees of its attorneys and the reasonable fees of the attorneys of the Assignee and the Company in connection with the negotiations for, documenting of and closing of the transactions contemplated by this AAR Agreement.

12.

The Company hereby acknowledges that, Xxxxx Fargo Bank, N.A. has been appointed as the Master Servicer of the Assigned Loans pursuant to the Pooling and Servicing Agreement and, therefore, has the right to enforce all obligations of the Company under the Servicing Agreement. Such rights will include, without limitation, the right to terminate the Company 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 Company under the Servicing Agreement, the right to receive all monthly reports and other data required to be delivered by the Company under the Servicing Agreement, the right to examine the books and records of the Company, indemnification rights and the right to exercise certain rights of consent and approval relating to actions taken by the Company. The Company shall make all distributions under the Servicing Agreement to the Master Servicer by wire transfer of immediately available funds to:

Xxxxx Fargo Bank, N.A.

ABA Number: 000000000

Account Name: SAS Clearing

Account Number: 0000000000

For further credit to: DBALT 2006-AB4 Account # 00000000.

The Company shall deliver all reports required to be delivered under the Servicing Agreement to the Assignee and the Master Servicer at their respective addresses set forth in Section 10 herein. 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.

13.

This AAR Agreement shall be construed in accordance with the laws of the State of New York, without regard to conflicts of law principles (other than Section 5-1401 of the General Obligations Law), and the obligations, rights and remedies of the parties hereunder shall be determined in accordance with such laws.

14.

No term or provision of this AAR Agreement may be waived or modified without the consent of the Insurer unless such waiver or modification is in writing and signed by the party against whom such waiver or modification is sought to be enforced.

15.

This AAR Agreement shall inure to the benefit of the successors and assigns of the parties hereto. Any entity into which Assignor, Assignee or Company may be merged or consolidated or which succeeds to the business or assets thereof shall, without the requirement for any further writing, be deemed Assignor, Assignee or Company, respectively, hereunder.

16.

This AAR Agreement shall survive the conveyance of the Assigned Loans, the assignment of the Servicing Agreement to the extent of the Assigned Loans by Assignor to Assignee and the termination of the Servicing Agreement.

17.

This AAR Agreement may be executed simultaneously in any number of counterparts. Each counterpart shall be deemed to be an original and all such counterparts shall constitute one and the same instrument.

18.

In the event that any provision of this AAR Agreement conflicts with any provision of the Servicing Agreement with respect to the Assigned Loans, the terms of this AAR Agreement shall control.

[SIGNATURE PAGE FOLLOWS]

IN WITNESS WHEREOF, the parties hereto have executed this AAR Agreement as of the day and year first above written.

DB STRUCTURED PRODUCTS, INC., Assignor	GMAC MORTGAGE CORPORATION, Company


By:/s/ Xxxxx Xxxxxxx	By:/s/ Xxxxxx X. Xxxxxxx
Name: Xxxxx Xxxxxxx	Name: Xxxxxx X. Xxxxxxx
Title: Director	Title: Vice President


DEUTSCHE ALT-A SECURITIES, INC., Assignee


By: /s/ Xxx Xxxxxxxxx
Name: Xxx Xxxxxxxxx
Title: Director


ACKNOWLEDGED AND AGREED TO:

XXXXX FARGO BANK, N.A., Master Servicer


By:/s/ Xxxxxx X. Xxxxxx
Name: Xxxxxx X. Xxxxxx
Title: Vice President

ATTACHMENT 1

ASSIGNED LOANS

ON FILE

ATTACHMENT 2
SERVICING AGREEMENT

ON FILE

ATTACHMENT 3

EXHIBIT 1
NEW EXHIBIT D TO THE SERVICING AGREEMENT

STANDARD FILE LAYOUT- MASTER SERVICING

Exhibit D-1:Standard File Layout - Master Servicing
Column Name	Description	Decimal	Format Comment	Max Size
SER_INVESTOR_NBR	A value assigned by the Servicer to define a group of loans.		Text up to 10 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
BORROWER_NAME	The borrower name as received in the file. It is not separated by first and last name.		Maximum length of 30 (Last, First)	30
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 ($)	11
SERV_CURT_AMT_3	The third curtailment amount to be applied.	2	No commas(,) or dollar signs ($)	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 Key: 15=Bankruptcy, 00xXxxxxxxxxxx, , 00xXXX, 63=Substitution, 65=Repurchase,70=REO	2
ACTION_CODE	The standard FNMA numeric code used to indicate the default/delinquent status of a particular loan.			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
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

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

EXHIBIT 2

STANDARD FILE LAYOUT- DELINQUENCY REPORTING

Exhibit 2.1 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 2.2: 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: [________________________] 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 [_____________] 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 2.3: 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 2.4: 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 3: 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.

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.

Credits:

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 3A: Calculation of Realized Loss/Gain Form 332

Prepared by: __________________ Date: _______________ Phone: ______________________ Email Address:_____________________

Servicer Loan No. Servicer Name Servicer Address

[____________________] 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

(2) Interest accrued at Net Rate

(3) Accrued Servicing Fees

(4) Attorney's Fees

(5) Taxes (see page 2)

(6) Property Maintenance

(7) MI/Hazard Insurance Premiums (see page 2)

(8) Utility Expenses

(9) Appraisal/BPO

(10) Property Inspections

(11) FC Costs/Other Legal Expenses

____________________ (11)

(12) Other (itemize) Cash for

____________________

Keys__________________________ HOA/Condo

Fees_______________________

______________________________________

Total ExpensesCredits:

(14) Escrow Balance

(15) HIP Refund

(16) Rental Receipts

(17) Hazard Loss Proceeds

(18) Primary Mortgage Insurance / Gov’t Insurance HUD Part A

HUD Part B

(19) Pool Insurance Proceeds

$ ______________ (1) ________________ (2) ________________ (3) ________________ (4) ________________ (5) ________________ (6) ________________ (7) ________________ (8) ________________ (9) ________________ (10) ________________ (11) ________________ (12)________________ (12)________________ (12)________________ (12)

$ _______________ (13)

$ _______________ (14) ________________ (15) ________________ (16) ________________ (17) ________________ (18a)

________________ (18b)

________________ (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

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ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT

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