| 000 | No Errors |
| 001 | The Interchange Control Number in the Header and Trailer Do not Match; the Value from the Header is used in the Acknowledgment |
| 002 | This Standard as Noted in the Control Standards Identifier is not Supported |
| 003 | This Version of the Controls is not Supported |
| 004 | The Segment Terminator is Invalid |
| 005 | Invalid Value as Shown in the Reported Interchange Control Number |
| 006 | Invalid Value as Shown in the Reported Interchange Date |
| 007 | Invalid Value as Shown in the Reported Interchange Time |
| 008 | Invalid Value as Shown in the Reported Interchange Sender ID Qualifier |
| 009 | Invalid Value as Shown in the Reported Interchange Sender ID |
| 010 | Invalid Value as Shown in the Reported Interchange Receiver ID Qualifier |
| 011 | Invalid Value as Shown in the Reported Interchange Receiver ID |
| 012 | Invalid Value as Shown in the First Reference ID Qualifier |
| 013 | Invalid Value as Shown in the First Reference ID |
| 014 | Invalid Value as Shown in the Second Reference ID Qualifier |
| 015 | Invalid Value as Shown in the Second Reference ID |
| 016 | Trading Partnership not Established |
| 017 | Invalid Number of Included Groups Value |
| 018 | Invalid Control Structure |
| 019 | Improper (Premature) End-of-file (Transmission) |
| 020 | Duplicate Interchange Control Number |
| 021 | Invalid Data Element Separator |
| 022 | Invalid Component Element Separator |
| 023 | Failure to Transfer Interchange to the next Service Request Handler |
| 024 | Invalid Delivery Date in Deferred Delivery Request |
| 025 | Invalid Delivery Time in Deferred Delivery Request |
| 026 | Invalid Delivery Time Code in Deferred Delivery Request |
| 027 | Invalid Grade of Service Code |
| 028 | Time Out, Not Delivered |
| 029 | Time Out, Delivered |
| 030 | Time Out, Processed |
| 031 | Receiver Not On-line |
| 032 | Abnormal Conditions |
| 033 | Interchange Exceeds Maximum Size |