How To Fix SIPT818 - Reference billing document &1 must be digitally signed

SAP Error Message - Details

• Message type: E = Error

• Message class: SIPT - SIPT: Digital Signature Portugal

• Message number: 818

• Message text: Reference billing document &1 must be digitally signed

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message SIPT818 - Reference billing document &1 must be digitally signed ?

  The SAP error message SIPT818 indicates that a reference billing document must be digitally signed. This error typically arises in scenarios where electronic invoicing or billing is required, and the system mandates that certain documents be digitally signed to ensure authenticity and integrity.
  Cause:
  
  Missing Digital Signature: The billing document referenced does not have a digital signature, which is required for compliance with legal or business regulations.
  Configuration Issues: The system may not be properly configured to handle digital signatures for billing documents.
  Document Status: The billing document may be in a status that does not allow for digital signing.
  Authorization Issues: The user may not have the necessary permissions to digitally sign the document.
  
  Solution:
  
  
  Check Digital Signature Configuration:
  
  Ensure that the digital signature functionality is correctly configured in your SAP system. This may involve checking settings in the relevant modules (e.g., SD, FI).
  Verify that the digital signature settings are enabled for the billing document type in question.
  
  
  
  Sign the Document:
  
  If the document is eligible for signing, use the appropriate transaction or function to apply the digital signature to the billing document.
  This may involve navigating to the billing document and selecting an option to sign it digitally.
  
  
  
  Review Document Status:
  
  Check the status of the billing document. If it is in a status that does not allow for signing (e.g., already posted or archived), you may need to reverse or adjust the document before signing.
  
  
  
  User Authorization:
  
  Ensure that the user attempting to sign the document has the necessary authorizations. This may require checking user roles and permissions in the SAP system.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific instructions on how to implement digital signatures for billing documents in your version of SAP.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to digital signatures.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on digital signatures.
  Legal Requirements: Be aware of the legal requirements for digital signatures in your jurisdiction, as these may impact how you configure and use digital signatures in SAP.
  Training: Consider training for users on how to handle digital signatures within the SAP system to prevent future issues.
  
  By following these steps, you should be able to resolve the SIPT818 error and ensure that your billing documents are properly signed as required.