How To Fix SIG629 - External signature: Signed document was changed; no update

SAP Error Message - Details

• Message type: E = Error

• Message class: SIG - Digital Signature

• Message number: 629

• Message text: External signature: Signed document was changed; no update

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SIG629 - External signature: Signed document was changed; no update ?

  The SAP error message SIG629, which states "External signature: Signed document was changed; no update," typically occurs in the context of document management and digital signatures within SAP systems. This error indicates that a document that has been signed externally has been altered after the signature was applied, which invalidates the signature.
  
  Cause:
  
  
  Document Modification: The most common cause of this error is that the document has been modified after it was signed. This could happen due to:
  
  Manual changes made to the document.
  Automatic processes that update the document after it has been signed.
  System errors or bugs that inadvertently alter the document.
  
  
  
  Signature Validation: The system checks the integrity of the document against the signature. If any changes are detected, the signature is considered invalid, leading to this error message.
  
  
  Incorrect Configuration: There may be issues with the configuration of the digital signature process in SAP, which could lead to improper handling of signed documents.
  
  
  
  Solution:
  
  
  Revert