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

WM159 - Overview

• 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.

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

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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