we are in RDM V11.3 , window lookup created in the relationship doesnt let me lookup values from parent table during edit or creating records in webapp .
Also , i do not see option Multi Value Lookup in the drop down .
please let me know if you need additional details .
can you describe, how you are trying to choose values from the parent records? Or add some screenshots?
For adding more values from a parent table, you need to implement the lookup differently - here is a guide: https://support.ataccama.com/home/docs/aip/11.3.0/reference-data-manager/rdm-developer-guide/creating-the-rdm-data-model/rdm-relationships/how-to-create-an-mn-relationship-in-rdm