Administrative Claims means Claims that have been timely filed before the Administrative Claim Bar Date (except as otherwise provided by a separate order of the Bankruptcy Court), for costs and expenses of administration under sections 503(b), 507(b) or 1114(e)(2) of the Bankruptcy Code, including, without limitation: (a) the actual and necessary costs and expenses incurred after the Petition Date of preserving the Estate and operating the business of the Debtor (such as wages, salaries or commissions for services and payments for goods and other services and leased premises); and (b) all fees and charges assessed against the Estate under chapter 123 of title 28 United States Code, 28 U.S.C. §§ 1911-1930, but excluding Professional Fee Claims.