How To Fix WU866 - Changing the selling period: Subsequent processing has already begun

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 866

• Message text: Changing the selling period: Subsequent processing has already begun

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WU866 - Changing the selling period: Subsequent processing has already begun ?

  The SAP error message WU866, which states "Changing the selling period: Subsequent processing has already begun," typically occurs when you attempt to change the selling period of a sales document (like a sales order or a contract) after certain subsequent processes have already been initiated. This can include processes such as delivery creation, billing, or any other follow-up activities that depend on the original sales document.
  Cause:
  
  Subsequent Processing Initiated: The primary cause of this error is that the sales document has already been processed in a way that makes it impossible to change the selling period. For example, if a delivery has been created or an invoice has been generated based on the sales order, the system locks certain fields to maintain data integrity.
  Document Status: The status of the document may not allow changes to the selling period. If the document is in a status that indicates it has been processed, changes may be restricted.
  
  Solution:
  
  Check Document Status: Review the status of the sales document to determine if any subsequent processing has occurred. You can do this by checking the document flow in the sales order or contract.
  Cancel or Reverse Subsequent Processes: If possible, cancel or reverse any subsequent processes (like deliveries or invoices) that have been created based on the sales document. Once these processes are reversed, you should be able to change the selling period.
  Consult with Your SAP Administrator: If you are unable to reverse the processes or if the document is critical, consult with your SAP administrator or support team. They may have the ability to unlock the document or provide alternative solutions.
  Use Transaction Codes: You can use transaction codes like VA02 (Change Sales Order) to check the document and its status. If you need to reverse a delivery, you might use VL09 (Cancel Goods Movement) or similar transactions.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. Sometimes, there are known issues that have been documented with solutions or workarounds.
  Documentation: Review SAP documentation regarding sales order processing and the implications of changing selling periods. This can provide insights into best practices and system behavior.
  User Training: Ensure that users are trained on the implications of changing selling periods and the processes that can lead to this error. This can help prevent the issue from occurring in the future.
  
  By following these steps, you should be able to address the WU866 error and understand the underlying reasons for its occurrence.