TC 971 AC 505 — IRS Data Breach Tracking Indicator
Internal Revenue Manual Part 10. Security, Privacy, Assurance and Artificial Intelligence · 2026-10-03 edition · updated 2026-10-04 · United States
Important: Input of Action Code 505 is limited and reserved for use by the Office of Privacy, Governmental Liaison and Disclosure (PGLD) personnel.
TC 971 AC 505 is displayed on IDRS command code ENMOD and consists of the following data elements:
TRANS-DT
SECONDARY-DT
MISC
TC 971 AC 505 input date
Date the IRS data breach occurred.
The Breach Tracking Number (number assigned to the breach). This number begins with two alphas ("IR" , "CR" , or "PR" ) and is followed by 11 numeric digits. For example: IR20100211034
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