How To Fix HRLDAP020 - LDAP connection to Server &1 could not be made

SAP Error Message - Details

• Message type: E = Error

• Message class: HRLDAP - HR LDAP Extraction

• Message number: 020

• Message text: LDAP connection to Server &1 could not be made

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message HRLDAP020 - LDAP connection to Server &1 could not be made ?

  The SAP error message HRLDAP020 indicates that there is an issue with establishing a connection to the LDAP (Lightweight Directory Access Protocol) server. This error can occur due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Incorrect Server Address: The LDAP server address specified in the SAP configuration may be incorrect.
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the LDAP server.
  Firewall Restrictions: A firewall may be blocking the connection to the LDAP server.
  LDAP Server Down: The LDAP server may be down or not responding.
  Authentication Issues: Incorrect credentials or authentication methods may be causing the connection to fail.
  Configuration Errors: There may be misconfigurations in the SAP system's LDAP settings.
  
  Solutions:
  
  Verify Server Address: Check the LDAP server address in the SAP configuration (transaction code SU01 for user settings or LDAP settings in the relevant configuration area) to ensure it is correct.
  Test Network Connectivity: Use tools like ping or telnet to test connectivity to the LDAP server from the SAP application server.
  Check Firewall Settings: Ensure that the firewall settings allow traffic on the port used by the LDAP server (default is usually port 389 for LDAP and 636 for LDAPS).
  Check LDAP Server Status: Verify that the LDAP server is up and running. You may need to contact your network or system administrator for this.
  Review Authentication Credentials: Ensure that the credentials used for the LDAP connection are correct and have the necessary permissions.
  Review SAP Configuration: Double-check the LDAP configuration settings in SAP, including the connection type (LDAP or LDAPS), base DN, and any other relevant parameters.
  Check Logs: Review the SAP application logs (transaction SM21) and LDAP server logs for any additional error messages that may provide more context.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to LDAP connectivity issues for specific guidance and troubleshooting steps. You can search for relevant notes in the SAP Support Portal.
  Documentation: Refer to the official SAP documentation for configuring LDAP connections, which may provide additional insights and best practices.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support or your organization's IT support team for further assistance.
  
  By systematically addressing these potential causes, you should be able to resolve the HRLDAP020 error and establish a successful connection to the LDAP server.