How To Fix /SCWM/MFS394 - WT &1 already exists for HU &2 and will be used for put away

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MFS -

• Message number: 394

• Message text: WT &1 already exists for HU &2 and will be used for put away

Self-Explanatory Message

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• What is the cause and solution for SAP error message /SCWM/MFS394 - WT &1 already exists for HU &2 and will be used for put away ?

  The SAP error message /SCWM/MFS394 WT &1 already exists for HU &2 and will be used for put away typically occurs in the context of Warehouse Management (WM) and Handling Unit Management (HUM) within the SAP Extended Warehouse Management (EWM) module. This error indicates that there is an attempt to create a new Warehouse Task (WT) for a Handling Unit (HU) that already has an existing Warehouse Task associated with it.
  Cause:
  
  Duplicate Warehouse Task: The error arises when a Warehouse Task is being created for a Handling Unit that already has an existing Warehouse Task. This can happen if there is an attempt to process the same Handling Unit multiple times for putaway.
  System Configuration: There may be issues with the configuration of the warehouse processes or the handling unit management settings that lead to this situation.
  Concurrency Issues: If multiple users or processes are trying to create or modify Warehouse Tasks for the same Handling Unit simultaneously, it can lead to this error.
  
  Solution:
  
  Check Existing Warehouse Tasks: Before attempting to create a new Warehouse Task for a Handling Unit, check if there is already an existing Warehouse Task. You can do this by using transaction codes like /SCWM/WT or /SCWM/HU to view the current tasks and handling units.
  Use Existing Warehouse Task: If a Warehouse Task already exists for the Handling Unit, you should use that existing task for the putaway process instead of trying to create a new one.
  Review Process Flow: Ensure that the process flow for handling units and warehouse tasks is correctly followed. This includes proper completion of previous tasks before initiating new ones.
  System Configuration Review: If this error occurs frequently, it may be necessary to review the configuration settings in the EWM system to ensure they are set up correctly for handling units and warehouse tasks.
  Error Handling in Custom Code: If there is custom code involved in the warehouse processes, ensure that it properly checks for existing Warehouse Tasks before attempting to create new ones.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SCWM/WT for Warehouse Tasks and /SCWM/HU for Handling Units.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling it.
  Documentation: Review SAP EWM documentation for best practices in handling Warehouse Tasks and Handling Units to avoid such errors in the future.
  User Training: Ensure that users involved in warehouse operations are trained on the correct procedures to minimize the chances of encountering this error.
  
  By following these steps, you should be able to resolve the error and prevent it from occurring in the future.