Publication 1187›Table of Contents
Part B Data Communications…
0925 Publ 1187 (PDF) · 2026-10-03 edition · updated 2026-10-04 · United States
Sec. 1 Information Returns (IR) Application for Transmitter Control Code (TCC) ............................................ 27
.01 Information Returns (IR) Application for Transmitter Control Code (TCC) ..................................................... 27
.02 Using the Online IR Application for TCC ........................................................................................................ 27
.03 Application Approval/Completed .................................................................................................................... 28
.04 Revise Current Transmitter Control Code (TCC) Information ........................................................................ 28
.05 Do I Need More than One TCC? .................................................................................................................... 28
.06 Deleted TCC ................................................................................................................................................... 28
Sec. 2 Connecting to FIRE System ........................................................................................................................ 29
Sec. 2 Connecting to FIRE System (continued) .................................................................................................... 30
Sec. 3 Electronic Specifications ............................................................................................................................. 31
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.01 FIRE System .................................................................................................................................................. 31
.02 FIRE System Internet Security Technical Standards ..................................................................................... 31
Sec. 4 Electronic Submissions ............................................................................................................................... 32
.01 Electronic Submissions .................................................................................................................................. 32
.02 File Definitions ................................................................................................................................................ 32
.03 Submission Responses .................................................................................................................................. 32
Sec. 5 Test Files ....................................................................................................................................................... 33
Sec. 6 Accuracy of Data and Common Formatting/Submission Errors ............................................................. 34
.01 Accuracy of Data ............................................................................................................................................ 34
.02 Income Codes ................................................................................................................................................ 35
.03 Common Formatting Errors ............................................................................................................................ 35
.04 Common Submission Errors .......................................................................................................................... 38
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