How To Fix SO762 - RFC LDAP interface could not open LDAP connection

SAP Error Message - Details

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 762

• Message text: RFC LDAP interface could not open LDAP connection

What causes this issue?

The RFC-LDAP interface may have been supplied with an incorrect LDAP
computer address or port.

System Response

How to fix this error?

Check the LDAP computer address and port.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SO762 - RFC LDAP interface could not open LDAP connection ?

  The SAP error message SO762 indicates that there is an issue with the RFC (Remote Function Call) LDAP (Lightweight Directory Access Protocol) interface, specifically that it could not open an LDAP connection. This error can occur due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the LDAP server.
  Incorrect Configuration: The LDAP connection parameters (such as host, port, and credentials) may be incorrectly configured in the SAP system.
  LDAP Server Down: The LDAP server may be down or not reachable.
  Firewall Restrictions: Firewalls may be blocking the connection to the LDAP server.
  Authentication Issues: The credentials used to connect to the LDAP server may be incorrect or insufficient.
  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.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to check if the SAP system can reach the LDAP server on the specified port.
  
  
  
  Verify Configuration:
  
  Go to transaction SO20 in SAP to check the RFC destination settings for the LDAP connection.
  Ensure that the hostname, port, and other parameters are correctly configured.
  
  
  
  Check LDAP Server Status:
  
  Ensure that the LDAP server is running and accessible. You may need to contact your system administrator or check the server logs.
  
  
  
  Review Firewall Settings:
  
  Ensure that there are no firewall rules blocking the connection to the LDAP server. You may need to work with your network team to verify this.
  
  
  
  Validate Credentials:
  
  Double-check the username and password used for the LDAP connection. Ensure that the account has the necessary permissions.
  
  
  
  SSL/TLS Configuration:
  
  If using SSL/TLS, ensure that the certificates are correctly installed and configured. Check if the SAP system trusts the LDAP server's certificate.
  
  
  
  Check SAP Notes:
  
  Look for relevant SAP Notes that may address this specific error. SAP Notes often provide patches or configuration tips.
  
  
  
  Review Logs:
  
  Check the SAP system logs (transaction SM21) and the LDAP server logs for any additional error messages that could provide more context.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for configuring LDAP connections.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance.
  
  By systematically checking these areas, you should be able to identify and resolve the issue causing the SO762 error.