| Input Parameters | Significance |
| DtvLong idn | ident number of the parent entity |
| Output Parameters | Significance |
| char typ_nam [ ] [21] | list of all type relation names |
| DtvLong typ_idn [ ] | list of all type relation ident numbers |
| Return Code | Significance |
| 0 | no error |
| 1 | no type relations found |
| -1 | data base error reading the type relation data |