Code to identify reason for a session-level Reject (3) message.
Valid values:
| '0' | Invalid tag number |
| '1' | Required tag missing |
| '2' | Tag not defined for this message type |
| '3' | Undefined Tag |
| '4' | Tag specified without a value |
| '5' | Value is incorrect (out of range) for this tag |
| '6' | Incorrect data format for value |
| '7' | Decryption problem |
| '8' | Signature problem |
| '9' | CompID problem |
| '10' | SendingTime (52) accuracy problem |
| '11' | Invalid MsgType (35) |
Used in: