How To Fix MSG_CL_ER194 - Logical Key '&1' already registered with Application Key '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: MSG_CL_ER - Message Class for Enterprise Registry

• Message number: 194

• Message text: Logical Key '&1' already registered with Application Key '&2'

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 MSG_CL_ER194 - Logical Key '&1' already registered with Application Key '&2' ?

  The SAP error message MSG_CL_ER194 indicates that there is a conflict with logical keys in the system. Specifically, it means that a logical key (identified by &1) has already been registered with a specific application key (identified by &2). This typically occurs in the context of data management or data integration processes where logical keys are used to uniquely identify records.
  Cause:
  
  Duplicate Logical Key Registration: The logical key you are trying to register is already associated with another application key in the system. This can happen if there are attempts to register the same logical key multiple times or if there are inconsistencies in the data being processed.
  Data Migration Issues: If you are migrating data from one system to another, there may be conflicts in the logical keys being used.
  Configuration Errors: Incorrect configuration in the application or data model can lead to this error.
  
  Solution:
  
  Check Existing Registrations: Investigate the existing registrations of logical keys in the system. You can do this by querying the relevant tables or using transaction codes that allow you to view logical key registrations.
  Modify the Logical Key: If the logical key you are trying to register is indeed already in use, consider using a different logical key that does not conflict with existing entries.
  Data Cleanup: If the error is due to data migration, ensure that the data being migrated does not contain duplicates or conflicts with existing records.
  Review Configuration: Check the configuration settings related to logical keys and application keys to ensure they are set up correctly.
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance on handling logical keys and application keys in your version of SAP.
  
  Related Information:
  
  Transaction Codes: Depending on your SAP version, you may use transaction codes like SE11 (Data Dictionary), SE16 (Data Browser), or others to investigate the data model and existing registrations.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Support Community: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team for further assistance.