How To Fix 00773 - The received X.509 client certificate was not sent by ITS

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 773

• Message text: The received X.509 client certificate was not sent by ITS

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00773 - The received X.509 client certificate was not sent by ITS ?

  The SAP error message "00773 The received X.509 client certificate was not sent by ITS" typically occurs in scenarios where there is an issue with the handling of X.509 client certificates in the context of SAP Internet Transaction Server (ITS). This error indicates that the client certificate presented during the SSL handshake is not recognized as being sent by the ITS, which can lead to authentication failures.
  Causes:
  
  Misconfiguration of ITS: The ITS may not be properly configured to accept or validate the X.509 client certificates.
  Certificate Trust Issues: The certificate presented by the client may not be trusted by the ITS, possibly due to missing root or intermediate certificates in the trust store.
  Incorrect Certificate Chain: The client certificate may not be part of a valid certificate chain that leads back to a trusted root certificate.
  Client Certificate Not Sent: The client may not be sending the certificate at all, or it may be