How To Fix LDAPACCESS100 - Cannot create LDAP connection to server &1

SAP Error Message - Details

• Message type: E = Error

• Message class: LDAPACCESS - Messages for LDAP Interface with Mapping

• Message number: 100

• Message text: Cannot create LDAP connection to server &1

What causes this issue?

INCLUDE LDAPSYNC_FOLLOWUP

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?

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 LDAPACCESS100 - Cannot create LDAP connection to server &1 ?

  The SAP error message LDAPACCESS100 Cannot create LDAP connection to server &1 indicates that there is an issue with establishing a connection to the specified LDAP (Lightweight Directory Access Protocol) server. This error can arise due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Incorrect LDAP Server Address: The server address specified in the SAP configuration may be incorrect or unreachable.
  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 itself may be down or not responding.
  Authentication Issues: Incorrect credentials or authentication methods may be causing the connection to fail.
  SSL/TLS Configuration: If the LDAP server requires a secure connection (LDAPS), there may be issues with SSL/TLS configuration.
  SAP Configuration Errors: There may be misconfigurations in the SAP system's LDAP settings.
  
  Solutions:
  
  Verify LDAP Server Address: Check the configuration in SAP to ensure that the LDAP server address is correct. This can usually be found in transaction LDAP or SU01 (for user management).
  Test Network Connectivity: Use tools like ping or telnet to check if the SAP system can reach the LDAP server on the specified port (usually 389 for LDAP and 636 for LDAPS).
  Check Firewall Settings: Ensure that any firewalls between the SAP system and the LDAP server allow traffic on the required ports.
  Check LDAP Server Status: Verify that the LDAP server is up and running. You may need to contact your system administrator for this.
  Review Authentication Credentials: Ensure that the username and password used for the LDAP connection are correct and have the necessary permissions.
  SSL/TLS Configuration: If using LDAPS, ensure that the SSL certificates are correctly installed and trusted by the SAP system. You may need to import the LDAP server's certificate into the SAP trust store.
  Review SAP Configuration: Double-check the LDAP configuration settings in SAP, including the connection type, base DN, and any other relevant parameters.
  
  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.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LDAP, SU01, and SICF for managing LDAP connections and user authentication.
  Logs and Traces: Review the SAP system logs (transaction SM21) and traces (transaction ST22 for dumps) for additional error messages that may provide more context on the issue.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis team or SAP support for further assistance.