Hi Experts,
I create a odata project with one entity and include another odata service, create association between my own entity and include model reference's entity, create association set and navigation properties.as picture below

this link works fine:
/sap/opu/odata/SAP/ZDMS_002_SRV/HeaderSet(Dokar='ZSR',Doknr='10000000902')/versions
however, with this link, I get error "Entity by ID 'N2B8F050322926B2CA65BA5A590DE8B14' not found"
/sap/opu/odata/SAP/ZDMS_002_SRV/HeaderSet(Dokar='ZSR',Doknr='10000000902')?$expand=versions
how to fix it?
Or include Odata service doesn't support $expand parameter?

best regards,
felix