How To Fix WM020 - Module & has no valid assignment to assortments

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 020

• Message text: Module & has no valid assignment to assortments

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WM020 - Module & has no valid assignment to assortments ?

  The SAP error message WM020, which states "Module & has no valid assignment to assortments," typically occurs in the context of Warehouse Management (WM) when there is an issue with the assignment of a module (such as a storage type or storage bin) to an assortment in the system. This can happen during various processes, such as stock movements, inventory management, or when trying to perform certain transactions related to warehouse operations.
  Cause:
  
  Missing Assignment: The module (storage type or bin) is not properly assigned to the assortment in the system.
  Configuration Issues: There may be a configuration issue in the Warehouse Management settings where the assortment is not linked to the relevant storage types or bins.
  Data Inconsistency: There could be inconsistencies in the master data or configuration settings that prevent the system from recognizing the assignment.
  Transport Issues: If the system has recently undergone a transport of changes, the assignment may not have been included or properly activated.
  
  Solution:
  
  
  Check Assignments:
  
  Go to the configuration settings in SAP and check the assignment of the storage type or bin to the assortment.
  Use transaction codes like SPRO to navigate to the relevant configuration settings for Warehouse Management.
  
  
  
  Maintain Assortment Assignment:
  
  Ensure that the storage type or bin is correctly assigned to the assortment. This can usually be done in the configuration under the Warehouse Management settings.
  You may need to create or modify the assignment if it does not exist.
  
  
  
  Review Master Data:
  
  Check the master data for the storage type and assortment to ensure that all necessary information is correctly maintained.
  Ensure that the assortment is active and properly defined.
  
  
  
  Transport Management:
  
  If the issue arose after a transport, verify that all necessary objects were included in the transport request and that they have been properly activated in the target system.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on the configuration of assortments and warehouse management.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test transaction to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (for configuration), LT03 (for transfer orders), and LX01 (for inventory management).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that the user has the necessary authorizations to perform the actions related to warehouse management and assortment assignments.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in Warehouse Management.