Announcements
07/27/2026
Release Notes
07/27/2026
Enterprise Payment System (EPS) Release Notes-July 26, 2026

On Sunday, July 26, 2026, the United States Postal Service implemented the following software change:

Enterprise Payment System (EPS) 8.6.0.0
These Release Notes provide the contents of the release and affected subsystems.
The section titled Corrections to Known Issues is derived from External Trouble Reports (ETRs) for inclusion in this release.
This document is prepared based on the knowledge available at the time of its publication.

Data Files
07/27/2026
Labeling List Changes Effective September 1, 2026

Effective September 1, 2026, the Postal Service™ will revise Labeling List(s) L007, L008, L012, L016, L201, L606, and L607 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the September 1, 2026, effective date through October 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22708.

 

Release Notes
07/24/2026
Technical Specifications
07/24/2026
Technical Specifications
07/24/2026
Release Notes
07/23/2026
Release Notes
07/20/2026
User Guides
07/20/2026
Domestic Merchant Returns API: User Guide

This user guide provides examples of XML transactions to the USPS Merchant Returns web service and guidance for installation.

Presentations
07/17/2026
PS Form 3500 Application For Periodicals Mailing Privileges

PS Form 3500 presentation for completing and submitting the application to the PCSC.

Release Notes
07/17/2026
Applications/ Forms
07/17/2026
NCOALink® Software Developer License Agreement v29 (7/15/2026)

This agreement licenses the development of software interfaces for the NCOALink® product.

Applications/ Forms
07/17/2026
NCOALink® End User License Agreement v30 (7/15/2026)

This agreement licenses the use of the NCOALink® product to an "End User Licensee".

Applications/ Forms
07/17/2026
NCOALink® Software Interface Distributor License Agreement v30 (7/15/2026)

The software agreement for NCOALink® governs the distribution of licensee's certified NCOALink® software interface.

Applications/ Forms
07/17/2026
NCOALink® Limited Service Provider License Agreement v30 (7/15/2026)

This agreement licenses the use of the NCOALink® product to a "Limited Service Licensee".

Announcements
07/17/2026
Modifications to NCOALink® Licenses

This document provides information on modifications to NCOALink® licenses.

Applications/ Forms
07/17/2026
NCOALink® Full Service Provider License Agreement v36 (7/15/2026)

This agreement licenses the use of the NCOALink® product to a "Full Service Licensee".

Applications/ Forms
07/17/2026
LACSLink® End User License Agreement

This document contains the End User License Agreement for LACSLink®.

Fact Sheets
07/17/2026
Licensing Fees

This document contains information about licensing fees for USPS® Licensed Products.