This is a property of type Text.
The allowed values for this property are:
- Geohydrologie
- Geotechniek
- Spoorbouw
- Waterbouw
- Wegenbouw
{ "type": "PROPERTY_CONSTRAINT_SCHEMA", "constraints": { "type_constraint": "_txt", "allowed_values": [ "Geohydrologie", "Geotechniek", "Spoorbouw", "Waterbouw", "Wegenbouw" ] } }