How To Fix WG001 - Order type missing in header record, external requirement number &

WG001 - Overview

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 001

• Message text: Order type missing in header record, external requirement number &

What causes this issue?

The order type is missing.

System Response

No purchase order can be created without an order type. The order type
is determined from the supplier/supplying plant found.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WG001 - Order type missing in header record, external requirement number & ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WG001 - Order type missing in header record, external requirement number &
  
  
  Cause:
  This error occurs when the system expects an order type in the header record of a goods movement or production order, but it is missing or not maintained. The external requirement number (displayed as "&" in the message) refers to the specific document or transaction where this issue was detected.
  In SAP, the order type is a key field that defines the characteristics and processing rules of an order (e.g., production order, maintenance order). If this is missing in the header, the system cannot process the order correctly.
  
  When does this happen?
  
  During goods receipt or goods issue postings related to production or maintenance orders.
  When interfacing with external systems or uploading data where the order type is not provided.
  When creating or processing orders where mandatory fields are not filled.
  During batch input