How To Fix /SCWM/WM_SEL091 - Distribution equipment pos. &1 is not unique; pick-hu &2 is not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/WM_SEL -

• Message number: 091

• Message text: Distribution equipment pos. &1 is not unique; pick-hu &2 is not valid

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 /SCWM/WM_SEL091 - Distribution equipment pos. &1 is not unique; pick-hu &2 is not valid ?

  The SAP error message /SCWM/WM_SEL091 indicates that there is an issue with the distribution equipment position not being unique, and the pick handling unit (HU) specified is not valid. This error typically occurs in the context of warehouse management processes, particularly when dealing with handling units and distribution equipment in SAP Extended Warehouse Management (EWM).
  Cause:
  
  
  Non-Unique Distribution Equipment Position: The error suggests that the system has found multiple entries for the distribution equipment position specified (e.g., a storage bin or location) that are not unique. This can happen if there are duplicate entries in the system for the same equipment position.
  
  
  Invalid Pick Handling Unit: The pick handling unit (HU) referenced in the error message may not exist in the system, or it may not be in a valid status for picking. This could be due to various reasons, such as the HU being already picked, not being available, or being in a different warehouse.
  
  
  Solution:
  
  
  Check Distribution Equipment Position:
  
  Go to the relevant transaction in SAP (e.g., /SCWM/PRDI for picking) and verify the distribution equipment position.
  Ensure that there are no duplicate entries for the specified position. If duplicates exist, you may need to resolve them by either consolidating the entries or correcting the data.
  
  
  
  Validate Pick Handling Unit:
  
  Check the status of the pick handling unit (HU) mentioned in the error message. You can do this by using transaction /SCWM/HU to display the handling unit.
  Ensure that the HU is in a valid state for picking. If it is not valid, you may need to reprocess or recreate the HU.
  
  
  
  Review Configuration:
  
  Ensure that the configuration for handling units and distribution equipment is set up correctly in your SAP EWM system. This includes checking the settings for storage types, bins, and handling unit management.
  
  
  
  Consult Logs and Documentation:
  
  Check the application logs for more detailed information about the error. You can use transaction SLG1 to view logs related to warehouse management.
  Review SAP documentation or notes related to this error message for any specific guidance or patches that may be applicable.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with the error message details and any relevant logs or screenshots.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SCWM/PRDI (for picking), /SCWM/HU (for handling units), and /SCWM/ORD (for order management).
  SAP Notes: Search for SAP Notes related to this error message in the SAP Support Portal, as there may be specific fixes or recommendations provided by SAP.
  Training and Documentation: Ensure that users involved in warehouse operations are trained on handling units and distribution equipment management to minimize errors.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.