How To Fix W4020 - &: & WM stock transfer (from material) exists

W4020 - Overview

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 020

• Message text: &: & WM stock transfer (from material) exists

What causes this issue?

A (warehouse management) stock transfer document 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 stock transfer document for the material.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W4020 - &: & WM stock transfer (from material) exists ?

  SAP Error Message:
  W4020 & : & WM stock transfer (from material) exists
  
  Meaning / 
  Cause:
  This warning message typically occurs in SAP Warehouse Management (WM) when you attempt to perform a material document posting or a stock transfer in Inventory Management (IM), but there is still an open or incomplete WM stock transfer related to the same material. In other words, the system detects that a WM stock transfer (transfer order or transfer requirement) for the material is still in process or not yet fully confirmed/closed.
  This situation can arise because WM and IM are tightly integrated, and certain stock movements in IM require corresponding WM movements to be completed first. If the WM transfer is not completed, the system prevents further IM postings to avoid inconsistencies in stock quantities.
  
  Typical Scenario:
  
  You try to post a goods movement (e.g., transfer posting, goods issue, or goods receipt) in IM.
  The system checks for open WM stock