How To Fix SUSR_CERT021 - Connection to Trust Center Service failed: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SUSR_CERT - User Certificates Administration

• Message number: 021

• Message text: Connection to Trust Center Service failed: &1

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 SUSR_CERT021 - Connection to Trust Center Service failed: &1 ?

  The SAP error message SUSR_CERT021 indicates that there is a failure in connecting to the Trust Center Service. This service is typically used for managing digital certificates and secure communications within the SAP environment. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems preventing the SAP system from reaching the Trust Center Service.
  Configuration Errors: Incorrect configuration settings in the SAP system related to the Trust Center Service can lead to connection failures.
  Service Availability: The Trust Center Service itself may be down or experiencing issues.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the Trust Center Service.
  Certificate Issues: Problems with the digital certificates being used, such as expiration or misconfiguration, can also lead to this error.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the SAP system can reach the Trust Center Service. You can use tools like ping or traceroute to verify connectivity.
  Check for any network outages or issues that may be affecting connectivity.
  
  
  
  Review Configuration Settings:
  
  Verify the configuration settings for the Trust Center Service in the SAP system. This includes checking the URL, port, and any other relevant parameters.
  Ensure that the settings are correctly defined in transaction SICF (Internet Communication Framework) and STRUST (SSL Certificate Management).
  
  
  
  Check Service Status:
  
  Confirm that the Trust Center Service is operational. You may need to check with your SAP Basis team or the service provider for any known outages or maintenance activities.
  
  
  
  Firewall and Security Settings:
  
  Review firewall rules and security settings to ensure that they allow traffic to and from the Trust Center Service.
  If necessary, adjust the firewall settings to permit the required connections.
  
  
  
  Validate Certificates:
  
  Check the digital certificates being used for any issues, such as expiration or incorrect configuration.
  If certificates are expired, renew them and update the configuration in the SAP system.
  
  
  
  SAP Notes and Support:
  
  Search for relevant SAP Notes that may address this specific error. SAP frequently publishes notes that provide solutions or workarounds for known issues.
  If the problem persists, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SICF (for service configuration) and STRUST (for managing SSL certificates).
  SAP Documentation: Review SAP documentation related to the Trust Center Service and digital certificate management for additional insights and best practices.
  Logs and Traces: Check system logs (transaction SM21) and traces (transaction ST22) for any additional error messages or information that may help diagnose the issue.
  
  By following these steps, you should be able to identify and resolve the cause of the SUSR_CERT021 error in your SAP system.