| Input Parameters | Significance |
| DtvLong idn | ident number of the records |
| char *tab | name of the table of the record |
| Output Parameters | Significance |
| no | - |
| Return Code | Significance |
| 0 | record exists in table |
| 1 | record in table temporarily deleted |
| 2 | record does not exist in table |
| -1 | data base error reading the table entries |
If you manipulate records in DataView tables using userexits, you should execute an existence check using this function prior to the transaction itself. In a multi-User environment DataView can not guarantee that a record has not been deleted by another user.