| Value | Description | Help |
|---|---|---|
| 0 | Don't count the fee | Don't count the fee |
| 1 | Invoice fee | Invoice fee |
| 2 | Don't invoice - recipient unknown | Don't invoice - recipient unknown |
| 3 | Don't invoice - mail not received | Don't invoice - mail not received |
| 9 | Don't invoice - other reason | Don't invoice - other reason |