How To Fix /SCWM/WHO441 - Pick-HUs can only be taken over if all WTs of original WOs are unassigned

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/WHO -

• Message number: 441

• Message text: Pick-HUs can only be taken over if all WTs of original WOs are unassigned

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/WHO441 - Pick-HUs can only be taken over if all WTs of original WOs are unassigned ?

  The SAP error message /SCWM/WHO441 indicates that you are trying to take over Handling Units (HUs) for picking, but there are still open Warehouse Tasks (WTs) associated with the original Warehouse Orders (WOs) that need to be unassigned first. This is a common issue in SAP Extended Warehouse Management (EWM) when dealing with handling units and warehouse tasks.
  Cause:
  The error occurs because:
  
  There are still active Warehouse Tasks linked to the original Warehouse Orders that have not been completed or unassigned.
  The system requires that all WTs related to the original WOs be unassigned before you can take over the HUs for picking.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Active Warehouse Tasks:
  
  Go to the EWM monitor or transaction code /SCWM/PRDI to check the status of the Warehouse Tasks associated with the original Warehouse Orders.
  Identify any WTs that are still assigned and need to be unassigned.
  
  
  
  Unassign Warehouse Tasks:
  
  If there are WTs that are still assigned, you can unassign them. This can typically be done through the EWM monitor or using the transaction code /SCWM/WT to manage the Warehouse Tasks.
  Select the relevant WTs and choose the option to unassign them.
  
  
  
  Confirm Warehouse Orders:
  
  Ensure that the original Warehouse Orders are confirmed if they are completed. This may involve confirming the tasks or the entire order, depending on your process.
  
  
  
  Retry the Operation:
  
  After unassigning the WTs, attempt to take over the Handling Units again.
  
  
  
  Related Information:
  
  Warehouse Management Processes: Understanding the flow of Warehouse Management processes in SAP EWM can help in troubleshooting similar issues in the future.
  Handling Units: Familiarize yourself with how Handling Units are managed in EWM, including their relationship with Warehouse Orders and Tasks.
  SAP Notes and Documentation: Check SAP Notes for any specific patches or updates related to this error message, as well as the official SAP documentation for EWM for best practices and troubleshooting tips.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP community forums for additional insights.