How To Fix WS691 - Transaction supports only documents with the classic settlement method

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 691

• Message text: Transaction supports only documents with the classic settlement method

Self-Explanatory Message

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• What is the cause and solution for SAP error message WS691 - Transaction supports only documents with the classic settlement method ?

  SAP Error Message:
  WS691 - Transaction supports only documents with the classic settlement method
  
  
  Cause:
  This error occurs when you try to process a transaction (such as settlement or reposting) that is designed to work only with documents using the classic settlement method, but the document you are processing uses a different settlement method (for example, the new settlement method introduced in newer SAP releases).
  In SAP, there are two main settlement methods for internal orders and other controlling objects:
  
  Classic Settlement Method: The traditional method where settlement rules are maintained manually, and the system processes settlements accordingly.
  New Settlement Method: Introduced in newer SAP versions (e.g., S/4HANA), this method uses a different approach for settlement, often integrated with Universal Allocation or other advanced features.
  
  If a transaction or program is coded to handle only classic settlement documents, it will throw this error when encountering documents settled with the new method.
  
  When does this typically happen?
  
  When running settlement