How To Fix WS029 - Cancellation (reversal) document & cannot be cancelled

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 029

• Message text: Cancellation (reversal) document & cannot be cancelled

What causes this issue?

<GL:cancellation_document>Cancellation documents</> for invoices and
credit notes cannot be cancelled.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WS029 - Cancellation (reversal) document & cannot be cancelled ?

  The SAP error message WS029: "Cancellation (reversal) document & cannot be cancelled" typically occurs when you try to cancel or reverse a document that itself is a cancellation or reversal document. In SAP, cancellation documents are created to reverse the effects of an original document, but these cancellation documents are generally not allowed to be cancelled or reversed again.
  
  
  Cause:
  
  You are attempting to cancel or reverse a document that is already a cancellation (reversal) document.
  SAP does not allow reversal of reversal documents to maintain data integrity and avoid circular references.
  This error ensures that the document flow remains consistent and prevents logical conflicts in financial or material documents.
  
  
  Explanation:
  
  When you post a document (e.g., an invoice, goods receipt), and then cancel it, SAP creates a reversal document.
  If you try to cancel this reversal document, SAP throws WS029 because the system expects you to cancel the original document instead.
  The system enforces a rule: Only