How To Fix FDT_CORE523 - Generation manager is registered on &2, so it is not usable for &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 523

• Message text: Generation manager is registered on &2, so it is not usable for &1

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 FDT_CORE523 - Generation manager is registered on &2, so it is not usable for &1 ?

  The SAP error message FDT_CORE523 indicates that there is an issue with the generation manager registration in the SAP system. This error typically arises in the context of the SAP Fiori Design Time (FDT) or when working with the SAP Fiori elements and UI5 applications.
  Cause:
  The error message states that the generation manager is registered on a specific instance (indicated by &2), which means that it is already in use or locked for that instance. As a result, it cannot be utilized for the object or instance indicated by &1. This can happen due to:
  
  Concurrent Usage: Another process or user is currently using the generation manager for the specified instance.
  Configuration Issues: There may be misconfigurations in the system that prevent the generation manager from being accessed properly.
  System Locking: The instance may be locked due to a previous operation that did not complete successfully.
  
  Solution:
  To resolve the FDT_CORE523 error, you can try the following steps:
  
  
  Check for Active Sessions: Verify if there are any active sessions or processes that are using the generation manager. You can do this by checking transaction codes like SM50 (Process Overview) or SM66 (Global Process Overview) to see if there are any locks or active processes.
  
  
  Release Locks: If you find any locks, you may need to release them. This can be done by terminating the session or process that is holding the lock.
  
  
  Restart the Generation Manager: If the issue persists, consider restarting the generation manager or the relevant service. This can sometimes clear up any temporary issues.
  
  
  Check Configuration: Review the configuration settings related to the generation manager to ensure that everything is set up correctly.
  
  
  Consult Logs: Check the system logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  Contact SAP Support: If none of the above solutions work, it may be necessary to contact SAP support for further assistance. They can provide more detailed insights based on the specific configuration and state of your system.
  
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that might address this specific error or provide patches and updates.
  Documentation: Review the official SAP documentation for Fiori and FDT to understand the expected behavior and configuration of the generation manager.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the FDT_CORE523 error in your SAP system.