How To Fix V1051 - Sales office &1 is not defined for sales area &2 &3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: V1 - Verkaufsbelegbearbeitung

• Message number: 051

• Message text: Sales office &1 is not defined for sales area &2 &3 &4

What causes this issue?

<GL:sales_office>Sales office</> &V1& is not allowed in
<GL:sales_area>sales area</> &V2& &V3& &V4&.
INCLUDE 'NA_NO_PROCESSING_2' OBJECT DOKU ID TX
INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE E
You can display the entries which are allowed in combination with this
sales area by placing the cursor on the <LS>sales office</> field and
selecting F4 (Possible entries)
You can create new sales offices or change the allocation of sales
areas in <GL:customizing>Customizing</> for Sales if you have the
authorization to do so.

Error message extract from SAP system. Copyright SAP SE.