Creating Service Order Template Error :"No item category could be determined"

Hello,

i m creating a Service Order Template with the Configuration Guide C3S during the creation of Service Order Management.

I now get two errors: "No item category could be determined" and "Conversion factors are invalid" . My guess is, that it has to do something with the product for this Service Order Template. In the assignmentblock items i cant choose an item category for this product. (There should be a category)

Has anyone an idea to solve this?

best regards

Tim Christian Peters