Error
Error Code:
4243
SAP S/4HANA Error 4243: Duplicate Identity Provider
Description
This error signifies an attempt to register an identity provider (IdP) or security provider with a subject and issuer combination that already exists within the SAP S/4HANA system. It commonly arises during the configuration, import, or synchronization of security-related settings and trust configurations.
Error Message
ERR_PROVIDER_DUPLICATE_SUBJECT_ISSUER
Known Causes
3 known causesExisting Configuration Re-entry
An identity provider or security provider has been configured twice, either manually or via automated processes, resulting in duplicate entries for the same subject and issuer.
Importing Duplicate Provider
Attempting to import an identity provider configuration that already exists within the system's trust store or security settings, leading to redundancy.
Migration/System Copy Anomaly
During a system migration, upgrade, or copy process, security configurations were not properly reconciled, causing duplicate provider entries upon activation.
Solutions
3 solutions available1. Identify and Remove Duplicate Identity Provider Configurations medium
Locate and delete redundant entries for the same identity provider in the SAP S/4HANA system.
1
Access the SAP S/4HANA system's Identity Provider configuration. This is typically done via transaction `SAML2` or through the relevant Fiori Launchpad tiles under Security or Identity Management.
2
Navigate to the 'Identity Providers' tab or section.
3
Carefully review the list of configured identity providers. Look for entries that have the same Issuer URL and potentially the same Subject Name ID format or other identifying attributes.
4
If duplicate entries are found, select the redundant entry and use the 'Delete' or 'Remove' function. **Caution:** Ensure you are deleting the correct duplicate and not the primary or intended configuration.
5
Save your changes. The system may require a restart of relevant services or a full system restart for the changes to take effect, depending on the configuration and system setup.
2. Verify and Correct SAML Metadata for Identity Providers medium
Ensure that the SAML metadata provided by the identity provider is unique and correctly configured within S/4HANA.
1
On the SAP S/4HANA system, go to transaction `SAML2` or the equivalent Fiori application.
2
Select the 'Identity Providers' tab.
3
For each configured identity provider, examine the 'Metadata' section. This often involves checking the Issuer URL, Entity ID, and the X.509 signing certificates.
4
If the identity provider is configured using metadata from a URL, ensure that the URL is correct and accessible. If it's configured by uploading metadata, verify the uploaded file for any inconsistencies or duplicate information.
5
If you suspect the identity provider itself is sending duplicate or conflicting information in its metadata, contact your identity provider administrator to rectify the issue on their end. Once corrected, re-upload or re-fetch the metadata in S/4HANA.
6
Save the changes and test the SAML SSO connection.
3. Review and Clean Up Trust Relationships in Trust Management advanced
Examine and clean up the trust configuration in the SAP Trust Manager to remove conflicting or duplicate entries.
1
Access the SAP NetWeaver Trust Manager via transaction `STRUST`. This transaction is used for managing SSL certificates and trust relationships.
2
Navigate to the relevant PSE (Personal Security Environment) node that handles SAML 2.0 or SSO configurations. This might be under 'SSL Server Standard' or a custom PSE if one has been created for SAML.
3
Within the PSE, look for entries related to your identity provider. Pay close attention to the 'Own Certificate' and 'Trusted Certificates' sections.
4
Identify any duplicate entries for the same identity provider's certificates or trust configurations. This could manifest as multiple entries with the same issuer or subject name.
5
Carefully delete any duplicate or outdated trust entries. **Extreme caution is advised** as incorrect modifications in `STRUST` can impact system security and connectivity. It is highly recommended to have a backup or rollback plan.
6
Save the changes to the PSE. The system might require a restart of the ICM (Internet Communication Manager) or the entire application server instance for the changes to be fully applied.