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 TC 402 IS ON THE Form 3413 IN SECTION 01, MAKE THE PROPER CHANGES TO CORRECT THE PROBLEM.
When any of the following transaction codes are invalid for the doc code being processed, they may be converted to the following equivalent valid transaction code.
TC
Convert To
TC
Convert To
163
160
673
670
166
160
706
700
167
161
716
710
176
170
736
730
177
171
756
700
186
180
768
764
196
190
776
770
197
191
777
771 (BMF)
238
234
796
790
239
235
806
800
246
240
807
802
276
270
836
830
277
271
842
841
286
280
846
840
336
340 or 190
856
850
337
341
876
850
386, 388,389
Do not add
606
600
896
820
613
610
897
822
663
660
666
700
667
820
If no change is to be made to an amount, an amount sign, or transaction code, or if an amount is added and there is still a math error, reject the document, using Action Code 3.
Prepare Form 4227 and notate as follows: "Math error continues to appear; no obvious correction found" .
Attach 4227 to document and route to originator for research and/or correction.
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