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MFT-CD 13 has to be calendar year with Reference Number 628.

Note:

Internal Revenue Manual Part 3. Submission Processing · 2026-10-03 edition · updated 2026-10-04 · United States

If a State Code can't be found and you are rejecting the document, issue a Form 4227 (Intra-SC Reject or Routing Slip) and notate on the form "need valid entry for Field 41-C (State Code)" . Attach the Form 4227 to the document and route to the originator for research and correction.

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▸Contents — Internal Revenue Manual Part 3. Submission Processing
Internal Revenue Manual Part 3. Submission Processing

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