How To Fix /SCWM/GTS020 - Previous document number could not be changed (unloading warehouse tasks)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/GTS -

• Message number: 020

• Message text: Previous document number could not be changed (unloading warehouse tasks)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/GTS020 - Previous document number could not be changed (unloading warehouse tasks) ?

  The SAP error message /SCWM/GTS020 indicates that there is an issue with changing the previous document number in the context of unloading warehouse tasks in the SAP Extended Warehouse Management (EWM) module. This error typically arises when there is an attempt to modify a document that is not allowed to be changed due to certain constraints or conditions.
  Cause:
  
  Document Status: The document you are trying to change may be in a status that does not allow modifications. For example, if the document is already processed or completed, changes may not be permitted.
  Reference Integrity: The system may have integrity checks that prevent changes to documents that are referenced by other documents or processes.
  Configuration Settings: There may be specific configuration settings in the EWM or GTS (Global Trade Services) that restrict changes to certain document types or under certain conditions.
  User Authorizations: The user attempting to make the change may not have the necessary authorizations to modify the document.
  
  Solution:
  
  Check Document Status: Verify the status of the document you are trying to change. If it is completed or in a locked state, you may need to reverse or cancel the document before making changes.
  Review Dependencies: Check if the document is linked to other processes or documents. If it is, you may need to address those dependencies first.
  Configuration Review: Consult with your SAP EWM or GTS configuration team to review the settings related to document changes. They may need to adjust the configuration to allow for the changes you are attempting.
  User Authorization: Ensure that the user has the appropriate authorizations to make changes to the document. If not, the user may need to request additional permissions.
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional insights or updates that may address the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions for this specific error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes in EWM and GTS that may help in troubleshooting or managing warehouse tasks.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with the error message details and any relevant logs or screenshots.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.