| 1 | Functional Group Not Supported |
| 2 | Functional Group Version Not Supported |
| 3 | Functional Group Trailer Missing |
| 4 | Group Control Number in the Functional Group Header and Trailer Do Not Agree |
| 5 | Number of Included Transaction Sets Does Not Match Actual Count |
| 6 | Group Control Number Violates Syntax |
| 7 | Invalid Application Sender's Code |
| 8 | Invalid Application Receiver's Code |
| 9 | Invalid Responsible Agency Code |
| 10 | Authentication Key Name Unknown |
| 11 | Encryption Key Name Unknown |
| 12 | Requested Service (Authentication or Encryption) Not Available |
| 13 | Unknown Security Recipient |
| 14 | Unknown Security Originator |
| 15 | Syntax Error in Decrypted Text |
| 16 | Security Not Supported |
| 17 | Incorrect Message Length (Encryption Only) |
| 18 | Message Authentication Code Failed |
| 19 | Functional Group Control Number not Unique within Interchange |
| 23 | S3E Security End Segment Missing for S3S Security Start Segment |
| 24 | S3S Security Start Segment Missing for S3E End Segment |
| 25 | S4E Security End Segment Missing for S4S Security Start Segment |
| 26 | S4S Security Start Segment Missing for S4E Security End Segment |
| 30 | Invalid Group Date |
| 31 | Invalid Group Time |