How To Fix WM509 - Module & still has items assigned to assortments

WM509 - Overview

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 509

• Message text: Module & still has items assigned to assortments

What causes this issue?

A module cannot be deleted if it still has either
- valid assigments to plants, or
- valid items (materials)

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?

Error message extract from SAP system. Copyright SAP SE.

WM509 - Details

• The SAP error message WM509 ("Module & still has items assigned to assortments") typically occurs in the context of Warehouse Management (WM) when you are trying to delete or change a module (like a storage type or storage bin) that still has items assigned to assortments. This can happen in various scenarios, such as when trying to deactivate a storage type or when performing a warehouse reorganization.
  
  Cause:
  The error indicates that there are still items or stock that are linked to assortments in the specified module. Assortments are often used in retail and logistics to group items together for easier management and reporting. If there are still items assigned to these assortments, the system prevents you from making changes to ensure data integrity and avoid inconsistencies.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Assigned Items:
  
  Use transaction codes like MMBE (Stock Overview) or MB52 (List Warehouse Stocks on Hand) to check