Hi Denis.
We will start from ERP.
1. check ERP wh to EWM wh assignment.
In EWM check SPRO >> interface and below 2 setting its should show same as ERP.
Then Check SCU it should be your plant. And assign WH as attribute.
Check LNUM_EWM - BP has assigned with SCU in identification tab and same BP in SCU.
and as per above setting below setting will populate besitzer automatically if all above setting is good.
You check step by step and recreate new del.
Regards
Suraj