5 CFR § 1315.9 - Required documentation.
Agencies are required to ensure the following payment documentation is established to support payment of invoices and interest penalties:
(a) The following information from the contract is required as payment documentation:
(1) Payment due date(s) as defined in § 1315.4(g);
(2) A notation in the contract that partial payments are prohibited, if applicable;
(3) For construction contracts, specific payment due dates for approved progress payments or milestone payments for completed phases, increments, or segments of the project;
(4) If applicable, a statement that the special payment provisions of the Packers and Stockyard Act of 1921 (7 U.S.C. 182(3)), or the Perishable Agricultural Commodities Act of 1930 (7 U.S.C. 499a(4)), or Fish and Seafood Promotion Act of 1986 (16 U.S.C. 4003(3)) shall apply;
(8) Reference to requirements under the Debt Collection Improvement Act (Pub. L. 104–134, 110 Stat. 1321), including the requirement that payments must be made electronically except in situations where the EFT requirement is waived under 31 CFR 208.4. Where electronic payment is required, the contract will stipulate that banking information must be submitted no later than the first request for payment;
(1) Except for interim payment requests under cost-reimbursement service contracts, which are covered by paragraph (b)(2) of this section, the following correct information constitutes a proper invoice and is required as payment documentation:
(i) Name of vendor;
(ii) Invoice date;
(iii) Government contract number, or other authorization for delivery of goods or services;
(v) Description (including, for example, contract line/subline number), price, and quantity of goods and services rendered;
(vi) Shipping and payment terms (unless mutually agreed that this information is only required in the contract);
(ix) Contact name (where practicable), title and telephone number;
(x) Other substantiating documentation or information required by the contract.
(2) An interim payment request under a cost-reimbursement service contract constitutes a proper invoice for purposes of this part if it correctly includes all the information required by the contract or by agency procedures.
(c) Except for interim payment requests under cost-reimbursement service contracts, the following information from receiving reports, delivery tickets, and evaluated receipts is required as payment documentation:
(1) Name of vendor;
(2) Contract or other authorization number;
(3) Description of goods or services;
(4) Quantities received, if applicable;
(5) Date(s) goods were delivered or services were provided;
(6) Date(s) goods or services were accepted;
(7) Signature (or electronic alternative when supported by appropriate internal controls), printed name, telephone number, mailing address of the receiving official, and any additional information required by the agency.
(d) When a delivery ticket is used as an invoice, it must contain information required by agency procedures. The requirements in paragraph (b) of this section do not apply except as provided by agency procedures.