Error
Error Code:
4201
SAP S/4HANA Error 4201: LDAP Provider Already Exists
Description
This error indicates an attempt to create an LDAP provider configuration that already exists within your SAP S/4HANA system. It typically occurs during system setup, integration, or configuration updates related to user authentication and directory services.
Error Message
ERR_LDAP_PROVIDER_ALREADY_EXISTS
Known Causes
3 known causesDuplicate Configuration Attempt
An administrator or process attempted to create an LDAP provider entry using a name or identifier that is already registered in SAP S/4HANA.
Misconfigured Automation Script
An automated script or deployment process might be re-executing a configuration step without first checking for the existence of the LDAP provider, leading to a duplicate creation attempt.
Partial Previous Setup
A prior attempt to configure the LDAP provider might have partially succeeded, leaving a residual entry that prevents subsequent successful re-creation, even if the previous setup was incomplete.
Solutions
3 solutions available1. Identify and Remove Duplicate LDAP Provider Configuration medium
Locate and delete the redundant LDAP provider entry in the SAP system to resolve the conflict.
1
Log in to your SAP S/4HANA system with an administrator role (e.g., SAP_ALL profile).
2
Navigate to transaction code `LDAP` (or `SPRO` -> SAP Reference IMG -> SAP NetWeaver -> Application Server -> Connectivity -> SAP Gateway Service Enablement -> Configuration -> Activate and Maintain Services, then search for LDAP related configuration). The exact path might vary slightly depending on your S/4HANA version and customizations.
3
In the 'LDAP Servers' or 'LDAP Providers' configuration screen, identify the entry that is causing the duplicate. Look for identical hostnames, ports, or other identifying attributes.
4
Select the duplicate LDAP provider entry and delete it. Ensure you are deleting the correct entry to avoid unintended consequences.
5
Save your changes. If prompted to transport the changes, create a new transport request or add it to an existing one.
6
Test the LDAP configuration to ensure it is now functioning correctly without the error.
2. Verify and Correct RFC Destination for LDAP medium
Ensure that the RFC destinations used for LDAP communication are correctly configured and not duplicated.
1
Log in to your SAP S/4HANA system with an administrator role.
2
Navigate to transaction code `SM59`.
3
Under the 'RFC Destinations' section, look for destinations related to your LDAP setup. These might have names indicating LDAP or the target directory.
4
Examine the configuration of these RFC destinations. Specifically, check the 'Technical Settings' tab for the target host and program ID. Ensure there are no duplicate configurations pointing to the same LDAP server or service.
5
If you find duplicate or incorrectly configured RFC destinations, adjust them or delete the redundant ones. Be cautious when deleting RFC destinations, as they might be used by other system processes.
6
Save your changes. If necessary, create a transport request for these modifications.
7
Test your LDAP integration to confirm the error is resolved.
3. Review and Clean Up SAP Gateway Service Configuration advanced
Check SAP Gateway services for any residual or conflicting LDAP provider registrations.
1
Log in to your SAP S/4HANA system with an administrator role.
2
Navigate to transaction code `SGW_MON` (SAP Gateway Monitor).
3
In the SAP Gateway Monitor, go to 'Service Administration' -> 'Service Catalog'.
4
Search for services related to LDAP or authentication. Pay attention to services that might have been previously configured for LDAP access.
5
If you find any services that are no longer needed or are incorrectly configured with LDAP provider information, you can unregister or delete them. This might require specific authorization or a system administrator's intervention.
6
Ensure that no old or duplicate LDAP provider registrations are active within the Gateway.
7
Restart the SAP Gateway service if necessary (this might require system-level operations and coordination).
8
Test the LDAP functionality after these changes.