How To Fix LDAPRC054 - Loop detected

SAP Error Message - Details

• Message type: E = Error

• Message class: LDAPRC - LDAP Interface Messages in C

• Message number: 054

• Message text: Loop detected

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LDAPRC054 - Loop detected ?

  The SAP error message LDAPRC054 "Loop detected" typically occurs in the context of LDAP (Lightweight Directory Access Protocol) integration with SAP systems. This error indicates that there is a configuration issue where the LDAP server has detected a loop in the directory structure or in the way the SAP system is querying the LDAP directory.
  Causes:
  
  
  Circular References: The most common cause of this error is circular references in the LDAP directory. This can happen if an entry points back to itself or if there are multiple entries that reference each other in a way that creates a loop.
  
  
  Misconfiguration: Incorrectly configured LDAP search bases or filters in the SAP system can lead to situations where the same entries are being queried repeatedly.
  
  
  Directory Structure Issues: If the LDAP directory structure is not well-defined or has been altered improperly, it can lead to loops.
  
  
  Replication Issues: In environments with multiple LDAP servers, replication issues can sometimes cause inconsistencies that lead to loops.
  
  
  Solutions:
  
  
  Check LDAP Directory Structure: Review the LDAP directory structure to ensure there are no circular references. This may involve using LDAP browsing tools to visualize the directory and identify any problematic entries.
  
  
  Review SAP LDAP Configuration: Check the configuration settings in the SAP system for LDAP integration. Ensure that the search bases and filters are correctly set up to avoid querying the same entries multiple times.
  
  
  Modify Search Filters: If specific search filters are causing the loop, consider modifying them to be more restrictive or to avoid certain entries that may be causing the issue.
  
  
  Test with Different Tools: Use LDAP query tools (like ldapsearch) to test the queries being sent from SAP to the LDAP server. This can help identify if the issue is with the query itself or with the directory structure.
  
  
  Consult Documentation: Refer to SAP and LDAP documentation for best practices on configuring LDAP integration. This can provide insights into common pitfalls and how to avoid them.
  
  
  Contact Support: If the issue persists after checking the above points, consider reaching out to SAP support or your LDAP server support for further assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on LDAP integration issues.
  LDAP Documentation: Review the documentation for your specific LDAP server (e.g., OpenLDAP, Microsoft Active Directory) for troubleshooting circular reference issues.
  Logs: Examine the logs in both the SAP system and the LDAP server for any additional error messages or warnings that could provide more context about the loop detection.
  
  By following these steps, you should be able to identify and resolve the LDAPRC054 error in your SAP system.