SAP Message V3051 - Sales group &1 is not allowed for sales office &2

Diagnosis
Die sales group &V1& is not assigned tosales office &V2&.
INCLUDE 'NA_NO_PROCESSING_2' OBJECT DOKU ID TX LANGUAGE E
INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE E
You can assign sales groups or display the existing assignments usingCustomizing if you have the necessary authorization.