WBS element & does not belong to controlling area &

What causes this issue?

WBS element &V1& is not assigned from your account assignment to
controlling area &V2&.
You cannot carry out an account assignment for the project.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

Check that you have maintained the correct identifier for the WBS
element.

Error message extract from SAP system. Copyright SAP SE.