How To Fix /SCWM/TW_WT020 - *** Undoing of WT creation for WTs with destination = source

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/TW_WT -

• Message number: 020

• Message text: *** Undoing of WT creation for WTs with destination = source

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/TW_WT020 - *** Undoing of WT creation for WTs with destination = source ?

  The SAP error message /SCWM/TW_WT020 indicates an issue related to the creation of Warehouse Tasks (WTs) in the Extended Warehouse Management (EWM) module. Specifically, this error occurs when there is an attempt to create a Warehouse Task where the destination is the same as the source. This situation is typically not allowed because it does not make logical sense to create a task that moves stock from a location to the same location.
  Cause:
  The primary cause of this error is that the system is trying to create a Warehouse Task that involves moving stock from a source location to the same location as the destination. This can happen due to:
  
  Configuration Issues: Incorrect settings in the warehouse process types or in the handling unit management.
  User Input Errors: Manual entries that mistakenly set the source and destination to be the same.
  System Logic: Certain automated processes or scripts that do not account for the need to differentiate between source and destination.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Warehouse Task Creation Logic:
  
  Review the logic or configuration that generates the Warehouse Tasks. Ensure that the source and destination are correctly defined and that they are not the same.
  
  
  
  Review Process Types:
  
  Check the configuration of the process types in EWM. Ensure that the process types do not allow for tasks that have the same source and destination.
  
  
  
  Correct User Input:
  
  If the error is due to manual input, ensure that users are trained to enter the correct source and destination locations.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the process to identify where the source and destination are being set. This may involve looking at the relevant ABAP code or configuration settings.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to Warehouse Task creation to ensure compliance with best practices.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide insights or patches if this is a known issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in EWM, such as /SCWM/PRDI for inbound processing or /SCWM/PRDO for outbound processing.
  SAP Notes: Check for any SAP Notes that may address this specific error or provide additional context.
  EWM Configuration: Understanding the configuration of your EWM system can help prevent similar issues in the future.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to prevent it from occurring again.