How To Fix RMPS_GENERAL118 - Certificate unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: RMPS_GENERAL - Gen. Messages Classes Records Management for Public Sector

• Message number: 118

• Message text: Certificate unknown

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RMPS_GENERAL118 - Certificate unknown ?

  The SAP error message RMPS_GENERAL118, which indicates "Certificate unknown," typically arises in the context of secure communications, such as when using SSL/TLS for secure connections. This error suggests that the system is unable to recognize or validate a digital certificate that is being used in the communication process.
  Causes:
  
  Untrusted Certificate Authority (CA): The certificate may have been issued by a CA that is not trusted by the SAP system.
  Expired Certificate: The certificate may have expired, making it invalid for use.
  Incorrect Certificate Configuration: The certificate may not be properly configured in the SAP system.
  Missing Intermediate Certificates: If the certificate chain is incomplete (missing intermediate certificates), the system may not be able to validate the certificate.
  Hostname Mismatch: The certificate may not match the hostname of the server being accessed.
  
  Solutions:
  
  
  Install Trusted CA Certificates:
  
  Ensure that the root and intermediate certificates of the CA that issued the certificate are installed in the SAP system's trust store.
  You can use transaction STRUST in SAP to manage certificates.
  
  
  
  Check Certificate Validity:
  
  Verify that the certificate is still valid and has not expired. If it has expired, you will need to renew it.
  
  
  
  Correct Configuration:
  
  Ensure that the certificate is correctly configured in the SAP system. This includes checking the SSL configuration settings.
  
  
  
  Complete Certificate Chain:
  
  Make sure that all necessary intermediate certificates are included in the trust store. You can download these from the CA's website.
  
  
  
  Hostname Verification:
  
  Check that the hostname in the URL matches the Common Name (CN) or Subject Alternative Name (SAN) in the certificate. If there is a mismatch, you may need to obtain a new certificate that matches the hostname.
  
  
  
  Testing:
  
  After making changes, test the connection again to see if the error persists.
  
  
  
  Related Information:
  
  Transaction STRUST: This transaction is used to manage SSL certificates in SAP. You can view, import, and export certificates here.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or updates related to this error.
  Documentation: Refer to SAP's official documentation on SSL/TLS configuration for detailed steps on managing certificates.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.