ASC/X12 Reference
ISA - Interchange Control Header

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Technical Notes

  1. The ISA data segment is used to indicate the start of interchange.

Standard Information

NOTE: This information is referenced from ASC/X12 and may not be current.  For the latest information please visit the ASC/X12 web site.

To start and identify an interchange of zero or more functional groups and interchange-related control segments.

REF IDENTIFIER NAME REQ TYPE MIN/MAX NOTES
01 I01  Authorization Information Qualifier M ID  2/2  
02 I02  Authorization Information M AN  10/10  
03 I03  Security Information Qualifier M ID  2/2  
04 I04  Security Information M AN  10/10  
05 I05  Interchange ID Qualifier M ID 2/2  
06 I06  Interchange Sender ID M AN  15/15  
07 I05  Interchange ID Qualifier M ID 2/2  
08 I07  Interchange Receiver M AN  15/15  
09 I08  Interchange Date M DT  6/6  
10 I09  Interchange Time M TM 4/4  
11 I65  Repetition Separator M 1/1  
12 I11  Interchange Control Version Number M ID 5/5  
13 I12  Interchange Control Number M N0  9/9  
14 I13  Acknowledgment Requested M ID 1/1  
15 I14  Interchange Usage Indicator M ID 1/1  
16 I15  Component Element Separator M 1/1