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

SIPT818 - Overview

• 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.

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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