| 0 | invalid tag number |
| 1 | required tag missing |
| 10 | sendingtime accuracy problem |
| 11 | e |
| 2 | tag not defined for this message type |
| 3 | undefined tag |
| 4 | tag specified without a value |
| 5 | value is incorrect |
| 6 | incorrect data format for value |
| 7 | decryption problem |
| 8 | signature problem |
| 9 | compid problem |