How To Fix WM391 - In the next step you will branch to the material group class hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 391

• Message text: In the next step you will branch to the material group class hierarchy

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 WM391 - In the next step you will branch to the material group class hierarchy ?

  The SAP error message WM391 typically occurs in the context of Warehouse Management (WM) when there is an issue related to the material group class hierarchy during a process that involves material handling or inventory management. This error can arise in various scenarios, such as during the creation of a transfer order, stock transfer, or other warehouse-related transactions.
  Cause of WM391 Error
  The WM391 error message is generally caused by one of the following issues:
  
  
  Missing Material Group: The material being processed does not belong to a valid material group or the material group is not properly defined in the system.
  
  
  Incorrect Configuration: There may be an issue with the configuration of the material group class hierarchy in the system. This could include missing links or incorrect settings in the classification system.
  
  
  Authorization Issues: The user may not have the necessary authorizations to access the material group or its hierarchy.
  
  
  Data Inconsistencies: There may be inconsistencies in the master data related to the materials or their classifications.
  
  
  Solution to WM391 Error
  To resolve the WM391 error, you can take the following steps:
  
  
  Check Material Group:
  
  Verify that the material in question is assigned to a valid material group. You can do this by checking the material master data in transaction MM03 (Display Material).
  
  
  
  Review Material Group Configuration:
  
  Ensure that the material group class hierarchy is correctly configured. You can check this in the classification system using transaction CL02 (Change Class) or CL03 (Display Class).
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the material group and perform the required actions. This can be checked with the help of your SAP security team.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the material master data to identify any discrepancies. You can use transaction MM02 (Change Material) to make necessary corrections.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates that resolve known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after performing the above checks, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error and the steps you have already taken.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03, MM02, CL02, and CL03 for material and classification management.
  SAP Documentation: Review SAP documentation related to Warehouse Management and Material Management for best practices and configuration guidelines.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the WM391 error in your SAP system.