| 00 | Operation completed successfully |
| 02 | Duplicate Key was found |
| 04 | Invalid fixed length record |
| 05 | The file was created when opened - Successful Completion |
| 07 | CLOSE with REEL or NO REWIND executed for non tape dataset. |
| 10 | End of File encountered |
| 14 | Attempted to READ a relative record outside file boundary |
| 21 | Invalid Key - Sequence error |
| 22 | Invalid Key - Duplicate Key found |
| 23 | Invalid key - No record found |
| 24 | Invalid Key - key outside boundary of file. |
| 30 | Permanent I/O Error |
| 34 | Permanent I/O Error - Record outside file boundary |
| 35 | OPEN, but file not found |
| 37 | OPEN with wrong mode |
| 38 | Tried to OPEN a LOCKed file |
| 39 | OPEN failed, conflicting file attributes |
| 41 | Tried to OPEN a file that is already open |
| 42 | Tried to CLOSE a file that is not OPEN |
| 43 | Tried to REWRITE without READing a record first |
| 44 | Tried to REWRITE a record of a different length |
| 46 | Tried to READ beyond End-of-file |
| 47 | Tried to READ from a file that was not opened I-O or INPUT |
| 48 | Tried to WRITE to a file that was not opened I-O or OUTPUT |
| 49 | Tried to DELETE or REWRITE to a file that was not opened I-O |
| 91 | Password or authorization failed |
| 92 | Logic Error |
| 93 | Resource was not available (may be allocated to CICS or another user) |
| 94 | Sequential record unavailable or concurrent OPEN error |
| 95 | File Information invalid or incomplete |
| 96 | No DD statement for the file |
| 97 | OPEN successful and file integrity verified |
| 98 | File is Locked - OPEN failed |
| 99 | Record Locked - record access failed. |
