How To Fix ACM364 - Entity metadata entry [&1 / &2] already exists and must not be inserted

SAP Error Message - Details

• Message type: E = Error

• Message class: ACM - Message-Class for all ACM functions/exceptions

• Message number: 364

• Message text: Entity metadata entry [&1 / &2] already exists and must not be inserted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACM364 - Entity metadata entry [&1 / &2] already exists and must not be inserted ?

  The SAP error message ACM364 indicates that there is an attempt to insert an entity metadata entry that already exists in the system. This typically occurs in the context of data modeling or when working with the SAP Application Interface Framework (AIF) or similar components where metadata entries are managed.
  Cause:
  The error occurs due to the following reasons:
  
  Duplicate Entry: The entity metadata entry you are trying to insert already exists in the database. This could happen if there was a previous attempt to create the same entry, or if the entry was created by another process or user.
  Incorrect Configuration: There may be a misconfiguration in the system that is causing the same metadata to be processed multiple times.
  Data Migration Issues: If you are migrating data or metadata from another system, there may be conflicts with existing entries.
  
  Solution:
  To resolve the ACM364 error, you can take the following steps:
  
  
  Check Existing Entries: 
  
  Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check if the entity metadata entry already exists in the relevant tables.
  Identify the existing entry that is causing the conflict.
  
  
  
  Avoid Duplicate Insertions:
  
  Ensure that your process or program logic checks for the existence of the entity metadata before attempting to insert it. This can be done by querying the database for the entry before the insert operation.
  
  
  
  Modify or Update Existing Entry:
  
  If the entry already exists and you need to update it, consider using an update operation instead of an insert. This will allow you to modify the existing metadata without causing a conflict.
  
  
  
  Review Configuration:
  
  Check the configuration settings related to the entity metadata to ensure that there are no issues causing duplicate entries to be created.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific module or functionality you are working with to see if there are any known issues or additional steps required.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. Provide them with the details of the error and the context in which it occurs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11, SE16, and SE80 for managing and viewing metadata.
  SAP Notes: Search for SAP Notes related to ACM364 or the specific module you are working with for additional troubleshooting steps or patches.
  System Logs: Check system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the cause of the ACM364 error and implement a solution to resolve it.