Announcements
10/28/2026
INFORMATIONAL - USPS APIs System Deployment November 14
Announcements
10/28/2026
INFORMATIONAL - USPS APIs System Deployment November 8
Announcements
10/28/2026
INFORMATIONAL - USPS APIs System Deployment November 1
Announcements
10/28/2026
INFORMATIONAL - USPS APIs System Deployment - November 1
Announcements
10/28/2026
INFORMATIONAL - USPS APIs System Release Notification November 5
Announcements
10/28/2026
INFORMATIONAL -Informed Visibility USPS Ship Subscription Delays During Daylight Savings Time
Announcements
10/28/2026
DELIVERY - International Resumption of Mail Service Argentina - Effective October 30, 2026
Presentations
10/28/2026
USPS Ship Disputes and Refunds: Joint Review
FAQs
10/28/2026
USPS Ship Frequently Asked Questions

USPS Ship Frequently Asked Questions

Data Files
10/28/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Operation Codes List

This spreadsheet provides a list of operation codes (opcodes), also known as Scan Event Codes, for the IV-MTR application.