How To Fix 00138 - Logons from X.509 client certificate are generally rejected

00138 - Overview

• Message type: E = Error

• Message class: 00 -

• Message number: 138

• Message text: Logons from X.509 client certificate are generally rejected

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 00138 - Logons from X.509 client certificate are generally rejected ?

  The SAP error message "00138 Logons from X.509 client certificate are generally rejected" typically occurs when there is an issue with the X.509 client certificate used for authentication in an SAP system. This error indicates that the system is configured to reject logons that are attempted using X.509 client certificates.
  Causes:
  
  
  Configuration Issues: The SAP system may not be properly configured to accept X.509 client certificates. This could be due to incorrect settings in the SAP profile parameters or the SSL configuration.
  Certificate Trust: The client certificate may not be trusted by the SAP system. This can happen if the certificate is not signed by a trusted Certificate Authority (CA) or if the CA's root certificate is not installed in the SAP system.
  Expired or Invalid Certificate: The client certificate being used may be expired or invalid, leading to rejection during the authentication process.
  Client Certificate Not Provided: The client may not be sending the