How To Fix LDAP029 - No LDAP connection is active

SAP Error Message - Details

• Message type: E = Error

• Message class: LDAP - LDAP Interface Messages in ABAP

• Message number: 029

• Message text: No LDAP connection is active

What causes this issue?

No connection to the LDAP server exists.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Log on to the LDAP server first.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LDAP029 - No LDAP connection is active ?

  The SAP error message "LDAP029 No LDAP connection is active" typically indicates that the SAP system is unable to establish a connection to the LDAP (Lightweight Directory Access Protocol) server. This can occur for various reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Incorrect LDAP Configuration: The LDAP server settings in the SAP system may be incorrect, including the server address, port number, or authentication details.
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the LDAP server.
  LDAP Server Down: The LDAP server itself may be down or experiencing issues.
  Firewall Restrictions: Firewalls or security groups may be blocking the connection between the SAP system and the LDAP server.
  Authentication Issues: The credentials used to connect to the LDAP server may be incorrect or have insufficient permissions.
  Timeout Settings: The connection may be timing out due to long response times from the LDAP server.
  
  Solutions:
  
  
  Check Configuration:
  
  Verify the LDAP configuration in the SAP system (transaction code LDAP or SU01 for user settings).
  Ensure that the LDAP server address, port, and authentication method are correctly configured.
  
  
  
  Test Connectivity:
  
  Use tools like ping or telnet to check if the SAP system can reach the LDAP server on the specified port.
  If possible, use an LDAP client to test the connection to the LDAP server with the same credentials.
  
  
  
  Check LDAP Server Status:
  
  Ensure that the LDAP server is running and accessible.
  Check the server logs for any errors or issues that might indicate why the connection is failing.
  
  
  
  Review Firewall Settings:
  
  Check firewall rules to ensure that traffic between the SAP system and the LDAP server is allowed.
  If applicable, consult with your network/security team to verify that the necessary ports are open.
  
  
  
  Validate Credentials:
  
  Ensure that the username and password used for the LDAP connection are correct and have the necessary permissions.
  If using service accounts, ensure they are not locked or expired.
  
  
  
  Adjust Timeout Settings:
  
  If the connection is timing out, consider increasing the timeout settings in the SAP system or optimizing the LDAP server for better performance.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to LDAP connectivity. You can search for relevant notes in the SAP Support Portal.
  Documentation: Refer to the official SAP documentation for LDAP integration, which provides detailed steps for configuration and troubleshooting.
  Logs: Review the SAP system logs (transaction SM21) and the LDAP server logs for any additional error messages that could provide more context on the issue.
  
  By following these steps, you should be able to diagnose and resolve the "LDAP029 No LDAP connection is active" error in your SAP system.