Permanent Note: On May 1, 2006, the Interim Internal Purchasing Guidelines were replaced by the Postal Service's Supplying Principles and Practices (SPs and Ps).
Clause 4-2has been revised to add a section regarding Payment Offsets. This section provides information about the Postal Service’s participation in the Treasury Offset Program of the Department of Treasury’s Financial Management Service.
The SPs and Ps have been enhanced using the Alternate Codification Format. Codification is a system for numbering the chapters, subchapters, parts, and sections of a document. The codified version also provides an added measure of effectiveness in future search and reference capabilities.