SAP XS Migration Assistant - Error on some Delivery Units

Hello Experts,

I am using the HANA XS Migration Assistant to migrate an App to XS Advanced. For a sample DU which i created this process works fine but when i specify a different delivery Unit I get the followeing error:

It seems like the User connecting to the HANA doesnt get the correct list of delivery units.

Has anybody ever experienced this issue?

I tried to work around it by using the --package property. For some reason this is not recognized at all.

Am i making any obvious mistakes?

Best Regards,
Oliver