How To Fix WM159 - Material group & not defined for assortment &

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 159

• Message text: Material group & not defined for assortment &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WM159 - Material group & not defined for assortment & ?

  The SAP error message WM159 ("Material group & not defined for assortment &") typically occurs in the Warehouse Management (WM) module when there is an attempt to process a material that is not properly defined in the assortment for a specific material group. This can happen during various operations, such as stock transfers, inventory management, or when trying to create or manage warehouse tasks.
  Cause:
  
  Material Group Not Defined: The material group associated with the material is not defined in the assortment for the specific warehouse or storage type.
  Configuration Issues: There may be a configuration issue in the Warehouse Management settings where the material group is not linked to the assortment.
  Data Entry Errors: Incorrect data entry when creating or managing materials or assortments can lead to this error.
  
  Solution:
  
  
  Check Material Group Configuration:
  
  Go to the transaction code OMIY (or the relevant configuration path) to check the settings for the material group.
  Ensure that the material group is correctly defined and linked to the appropriate assortment.
  
  
  
  Define Assortment:
  
  Use transaction code OMIY to define or modify the assortment settings.
  Make sure that the material group in question is included in the assortment for the relevant warehouse.
  
  
  
  Review Material Master Data:
  
  Check the material master data for the material in question using transaction code MM03.
  Ensure that the material is assigned to the correct material group.
  
  
  
  Check Warehouse Management Settings:
  
  Review the Warehouse Management settings to ensure that all necessary configurations are in place for the assortment and material groups.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on how to configure assortments and material groups in your version of SAP.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above configurations, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), OMIY (Define Assortment), and WM01 (Warehouse Management).
  SAP Notes: Check for any SAP Notes related to WM159 for additional insights or patches that may address the issue.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to access and modify material and assortment configurations.
  
  By following these steps, you should be able to resolve the WM159 error and ensure that your material groups and assortments are correctly configured in SAP.