How To Fix LDAPRC018 - Comparison routine is not suitable for attribute type

SAP Error Message - Details

• Message type: E = Error

• Message class: LDAPRC - LDAP Interface Messages in C

• Message number: 018

• Message text: Comparison routine is not suitable for attribute type

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 LDAPRC018 - Comparison routine is not suitable for attribute type ?

  The SAP error message LDAPRC018: Comparison routine is not suitable for attribute type typically occurs when there is an issue with the way an attribute is being compared in an LDAP (Lightweight Directory Access Protocol) context. This error can arise in various scenarios, such as when integrating SAP with an LDAP directory for user authentication or data synchronization.
  Cause
  The error is generally caused by one of the following issues:
  
  
  Attribute Type Mismatch: The attribute being compared in the LDAP query does not match the expected data type. For example, if the attribute is expected to be a string but is being treated as a numeric value, this can lead to the error.
  
  
  Improper Configuration: The LDAP schema may not be correctly configured, or the attribute types defined in the LDAP directory do not align with what SAP expects.
  
  
  Unsupported Comparison Operation: The comparison operation being used may not be supported for the specific attribute type in the LDAP directory.
  
  
  Solution
  To resolve the LDAPRC018 error, you can take the following steps:
  
  
  Check Attribute Types: Verify the attribute types in the LDAP schema. Ensure that the attributes being compared are of compatible types. For example, if you are comparing a string attribute, ensure that both sides of the comparison are strings.
  
  
  Review LDAP Configuration in SAP: Check the configuration settings in SAP for the LDAP connection. Ensure that the mappings between SAP user attributes and LDAP attributes are correctly defined.
  
  
  Modify Comparison Logic: If you have control over the code or configuration that is performing the comparison, modify it to ensure that the comparison is valid for the attribute types involved.
  
  
  Consult Documentation: Refer to the SAP and LDAP documentation for guidance on supported attribute types and comparison operations. This can provide insights into what is permissible.
  
  
  Test with Different Data: If possible, test the LDAP queries with different data to see if the issue persists. This can help identify if the problem is data-specific.
  
  
  Check for Updates: Ensure that your SAP system and any related components are up to date, as updates may include fixes for known issues.
  
  
  Related Information
  
  SAP Notes: Check SAP Notes for any known issues or patches related to LDAP integration. SAP Notes often provide specific guidance for resolving errors.
  LDAP Schema Documentation: Review the documentation for the LDAP server you are using (e.g., Active Directory, OpenLDAP) to understand the attribute types and their expected formats.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to diagnose and resolve the LDAPRC018 error in your SAP environment.