How To Fix LDAPRC091 - Connection error occurred

SAP Error Message - Details

• Message type: E = Error

• Message class: LDAPRC - LDAP Interface Messages in C

• Message number: 091

• Message text: Connection error occurred

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 LDAPRC091 - Connection error occurred ?

  The SAP error message LDAPRC091 indicates that there is a connection error when trying to connect to an LDAP (Lightweight Directory Access Protocol) server. This error can occur due to various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes of LDAPRC091 Connection Error
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the LDAP server. This could be due to firewall settings, routing issues, or network outages.
  
  
  Incorrect Configuration: The LDAP connection parameters (such as server address, port number, and authentication details) may be incorrectly configured in the SAP system.
  
  
  LDAP Server Unavailability: The LDAP server may be down or not reachable due to maintenance or other issues.
  
  
  Authentication Issues: The credentials used to connect to the LDAP server may be incorrect or the user may not have the necessary permissions.
  
  
  SSL/TLS Issues: If the connection is supposed to be secure (using SSL/TLS), there may be issues with certificates or the configuration of secure connections.
  
  
  Version Compatibility: There may be compatibility issues between the SAP system and the LDAP server, especially if one of them has been recently updated.
  
  
  Solutions to LDAPRC091 Connection Error
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to check if the LDAP server is reachable from the SAP server.
  Ensure that there are no firewall rules blocking the connection.
  
  
  
  Verify Configuration:
  
  Go to the SAP system configuration for LDAP (transaction code LDAP or SU01 for user settings) and verify that the LDAP server address, port, and other parameters are correctly set.
  Ensure that the correct authentication method is being used.
  
  
  
  Check LDAP Server Status:
  
  Verify that the LDAP server is up and running. You may need to contact your system administrator or check the server logs.
  
  
  
  Validate Credentials:
  
  Ensure that the username and password used for the LDAP connection are correct and that the user has the necessary permissions.
  
  
  
  Review SSL/TLS Configuration:
  
  If using SSL/TLS, check that the certificates are valid and properly configured in both the SAP and LDAP systems.
  Ensure that the correct port (usually 636 for LDAPS) is being used.
  
  
  
  Consult Logs:
  
  Check the SAP system logs (transaction SM21) and the LDAP server logs for any additional error messages that may provide more context.
  
  
  
  Test Connection:
  
  Use the LDAP test tools available in the SAP system to test the connection to the LDAP server.
  
  
  
  Update or Patch:
  
  If there are known compatibility issues, ensure that both the SAP system and the LDAP server are updated to the latest versions or patches.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to LDAP integration for any known issues or specific configurations that may be required.
  Documentation: Refer to the official SAP documentation for LDAP integration for detailed configuration steps and troubleshooting tips.
  Community Forums: Engage with SAP community forums or support channels for additional insights and assistance from other users who may have faced similar issues.
  
  By systematically checking these areas, you should be able to identify and resolve the LDAPRC091 connection error in your SAP system.