Note:
Internal Revenue Manual Part 25. Special Topics · 2026-10-03 edition · updated 2026-10-04 · United States
Input a TC 560 with a DLN-CD of 70 or 99 to prevent Unpostable Code 178-2. Use DLN-CD 70 when correcting the ASED to a later date than the posted ASED. Use DLN-CD 99 when correcting the ASED to an earlier date than the posted ASED.
Get a plain-English answer with a citation back to this text.
Ask AI about this code