How To Fix REXCAO002 - Digital signature for the invoice does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: REXCAO - Message class for RE-FX Angola

• Message number: 002

• Message text: Digital signature for the invoice does not exist

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 REXCAO002 - Digital signature for the invoice does not exist ?

  The SAP error message REXCAO002, which states "Digital signature for the invoice does not exist," typically occurs in the context of electronic invoicing or document management systems where digital signatures are required for validation and authenticity of invoices.
  Cause:
  
  Missing Digital Signature: The invoice being processed does not have a digital signature attached to it. This could be due to a failure in the signing process or an oversight in the invoice generation.
  Configuration Issues: There may be issues with the configuration of the digital signature settings in the SAP system, which could prevent the system from recognizing or validating the signature.
  Document Type: The document type being processed may not be configured to require a digital signature, or the settings for that document type may not be correctly set up.
  Technical Issues: There could be technical issues related to the digital signature service or the underlying infrastructure that supports digital signatures.
  
  Solution:
  
  Check Invoice Generation: Ensure that the invoice is generated correctly and that the digital signature is applied during the creation process. If the signature is missing, regenerate the invoice with the correct settings.
  Review Configuration: Check the configuration settings for digital signatures in the SAP system. Ensure that the necessary parameters are set up correctly for the document type in question.
  Validate Signature: If the invoice is supposed to have a digital signature, validate the signature using the appropriate tools or services to ensure it is correctly applied.
  Consult Documentation: Refer to SAP documentation or help resources related to digital signatures and electronic invoicing for specific configuration steps or troubleshooting tips.
  Contact Support: If the issue persists, consider reaching out to SAP support or your internal IT team for further assistance. They may be able to provide insights based on system logs or configuration settings.
  
  Related Information:
  
  Digital Signature Requirements: Understand the legal and compliance requirements for digital signatures in your region or industry, as these can affect how invoices are processed.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  User Roles and Permissions: Ensure that the user roles and permissions are correctly set up to allow for the signing and processing of invoices.
  System Logs: Review system logs for any additional error messages or warnings that could provide more context about the failure to find the digital signature.
  
  By following these steps, you should be able to identify the cause of the REXCAO002 error and implement a solution to resolve it.