How To Fix SO839 - RFC-LDAP interface has received invalid key

SAP Error Message - Details

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 839

• Message text: RFC-LDAP interface has received invalid key

What causes this issue?

The RFC-LDAP interface cannot identify the RFC client using the
specified key.

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?

Logon to the LDAP service again. If the error occurs a second time, a
fault may exist in the RFC connection.

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 SO839 - RFC-LDAP interface has received invalid key ?

  The SAP error message SO839, which states "RFC-LDAP interface has received invalid key," typically occurs when there is an issue with the configuration of the LDAP (Lightweight Directory Access Protocol) settings in the SAP system. This error can arise due to various reasons, including incorrect parameters, invalid keys, or issues with the connection to the LDAP server.
  Causes:
  
  Invalid Key: The key being used to access the LDAP directory may be incorrect or not properly configured.
  Configuration Issues: The RFC destination or LDAP settings in the SAP system may not be set up correctly.
  Network Issues: There may be connectivity problems between the SAP system and the LDAP server.
  User Permissions: The user account being used to connect to the LDAP server may not have the necessary permissions.
  LDAP Server Issues: The LDAP server itself may be down or experiencing issues.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in SAP and check the RFC destination that is configured for the LDAP connection.
  Ensure that the connection parameters (like host, port, and user credentials) are correct.
  
  
  
  Verify LDAP Configuration:
  
  Use transaction SO10 to check the LDAP settings in the SAP system.
  Ensure that the LDAP server details, including the base DN (Distinguished Name), are correctly configured.
  
  
  
  Test Connection:
  
  In transaction SM59, test the connection to the LDAP server to ensure that it is reachable and that the credentials are valid.
  
  
  
  Check User Permissions:
  
  Verify that the user account being used to connect to the LDAP server has the necessary permissions to access the required data.
  
  
  
  Review Logs:
  
  Check the SAP system logs (transaction SLG1) for any additional error messages or details that may provide more context about the issue.
  
  
  
  Consult LDAP Administrator:
  
  If the issue persists, consult with the LDAP administrator to ensure that the LDAP server is functioning correctly and that the keys being used are valid.
  
  
  
  Update SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide updates to the LDAP integration.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for LDAP integration for detailed configuration steps and troubleshooting tips.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the problem cannot be resolved internally, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the SO839 error in your SAP system.