How To Fix W4021 - &: & WM transfer order exists

W4021 - Overview

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 021

• Message text: &: & WM transfer order exists

What causes this issue?

A (warehouse management) transfer order still exists for the material.

System Response

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

How to fix this error?

Delete the WM transfer order for the material.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

W4021 - Details

• Certainly! Here's a detailed explanation for the SAP error message W4021:
  
  SAP Error Message: W4021 & : & WM transfer order exists
  
  1. Cause
  The message W4021 typically occurs in the context of Warehouse Management (WM) in SAP. It indicates that a Warehouse Management (WM) transfer order already exists for the material/document in question.
  
  This usually happens when you try to create or post a goods movement (e.g., goods receipt, goods issue, transfer posting) in Inventory Management (IM), but there is already an open or existing transfer order in WM for the same material and storage location.
  The system prevents duplicate or conflicting transfer orders to avoid inconsistencies in warehouse stock management.
  It can also occur if a previous transfer order was created but not yet confirmed or closed.
  
  
  2. Solution
  To resolve the W4021 message, you should:
  
  
  Check for existing transfer orders:
  
  Use transaction LT22 (Display Transfer Order) or LT21 (Display Transfer Order by Document) to find existing transfer