| 000 | No error |
| 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 Interchange ID Qualifier for Sender |
| 006 | Invalid Interchange Sender ID |
| 007 | Invalid Interchange ID Qualifier for Receiver |
| 008 | Invalid Interchange Receiver ID |
| 009 | Unknown Interchange Receiver ID |
| 010 | Invalid Authorization Information Qualifier Value |
| 011 | Invalid Authorization Information Value |
| 012 | Invalid Security Information Qualifier Value |
| 013 | Invalid Security Information Value |
| 014 | Invalid Interchange Date Value |
| 015 | Invalid Interchange Time Value |
| 016 | Invalid Interchange Standards Identifier Value |
| 017 | Invalid Interchange Version ID Value |
| 018 | Invalid Interchange Control Number Value |
| 019 | Invalid Acknowledgment Requested Value |
| 020 | Invalid Test Indicator Value |
| 021 | Invalid Number of Included Groups Value |
| 022 | Invalid Control Structure |
| 023 | Improper (Premature) End-of-File (Transmission) |
| 024 | Invalid Interchange Content (e.g., Invalid GS Segment) |
| 025 | Duplicate Interchange Control Number |
| 026 | Invalid Data Element Separator |
| 027 | Invalid Component Element Separator |
| 028 | Invalid Delivery Date in Deferred Delivery Request |
| 029 | Invalid Delivery Time in Deferred Delivery Request |
| 030 | Invalid Delivery Time Code in Deferred Delivery Request |
| 031 | Invalid Grade of Service Code |
| 032 | Invalid Repetition Separator |
| 033 | Unexpected Interchange Syntax Extension (ISX) Segment |
| 034 | Invalid Release Character |
| 035 | Invalid Character Encoding Value |
| 036 | Invalid Overriding X12 Version/Release Code |
| 037 | Unknown Industry Identifier |
| 038 | Overriding X12 Version/Release Code is Not Supported. |