Stefan

We could make a similar check as with the [def check_identifier_null():](https://github.com/QGEP/qgepqwat2ili/blob/6acb01260d098783d612f1f4a9d72cc7e2269476/qgepqwat2ili/utils/ili2db.py#L101) for this - [x] betreiberref - [x] eigentuemerref will be MANDATORY in VSA-DSS / SIA405 Abwasserr Are there more?

@ponceta This is mentioned in step 3 of the [Preparation for migration QGEP -> TEKSI Wastewater & GEP](https://github.com/teksi/wastewater/discussions/437) that you have to check for empty refs

Also added - [x] datenherrref - [x] datenlieferantref to comply with Release 2020.xx requirements

@ponceta Is this on INTERLIS export? Seems to be with this object: ch20p3q400002063 Gemeinde Did you add the subclass entries correctly?

You have ch20p3q400002062 twice – one in od_municipality and once in od_canton We don’t check on such a case (yet)

bezeichnung / identifier : `RC 446_cff-RC 382_cff` is 21 characters instead of 20 standortname: `RC 446_cff-RC 382_cf` is ok < 50 characters

I made a suggestion for an check_identifier_length(): https://github.com/QGEP/qgepqwat2ili/pull/191 Are there other attributes needed? remark (80)?

> 3. When exporting wrong data, the LEFT(value,20) in that particular case should be exported For remarks this might be ok, but changing identifiers?

This point was patched in Release 2020 and newer of VSA-DSS / SIA405 Abwasser: Channels now can have an identier lenght of 41 characters so that you can have from...

You have BauwerksTeil / structure_parts such as cover etc. that are not linked to a wastewater_structure. When you use the wizard, this should not happen, but it might have happened...