Debit type for value category & & & could not be determined

What causes this issue?

No debit type could be determined for value category &V3& in client
&V1& and controlling area &V2&, even though there are assigned cost
elements or commitment items for this value category.

System Response

The system enters debit type "1", meaning that the value category is
intended for recording costs and outgoing payments.

How to fix this error?

Go to the Project System IMG and check the value category assignment.
Make any necessary changes in value category maintenance or assignment.

Error message extract from SAP system. Copyright SAP SE.