How To Fix /UI5/MP_CA_UI5000 - Model with ID &1&2 already exists in base descriptor

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI5/MP_CA_UI5 -

• Message number: 000

• Message text: Model with ID &1&2 already exists in base descriptor

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI5/MP_CA_UI5000 - Model with ID &1&2 already exists in base descriptor ?

  The SAP error message /UI5/MP_CA_UI5000 Model with ID &1&2 already exists in base descriptor typically occurs in the context of SAPUI5 applications when there is an attempt to register a model with an ID that has already been registered in the base descriptor. This can happen due to various reasons, such as duplicate model definitions or incorrect configuration in the application.
  Cause:
  
  Duplicate Model Registration: The most common cause is that the same model ID is being registered multiple times in the application. This can happen if the model is defined in multiple places or if the application is trying to load the same model more than once.
  Incorrect Configuration: There might be an issue in the configuration files (like manifest.json or Component.js) where the model is defined incorrectly or redundantly.
  Caching Issues: Sometimes, caching issues can lead to the application trying to load an old version of the model.
  
  Solution:
  
  Check Model Definitions: Review your application code, especially the manifest.json and Component.js files, to ensure that each model is defined only once with a unique ID.
  Remove Duplicates: If you find duplicate model definitions, remove or consolidate them to ensure that each model ID is unique.
  Clear Cache: Clear the browser cache or any server-side cache that might be holding onto old versions of the application. This can help in ensuring that the latest version of the application is being loaded.
  Debugging: Use debugging tools to trace where the model is being instantiated. This can help identify if there are any unintended calls that are causing the model to be registered multiple times.
  Check Dependencies: If your application uses third-party libraries or components, ensure that they are not also trying to register a model with the same ID.
  
  Related Information:
  
  SAPUI5 Documentation: Refer to the official SAPUI5 documentation for guidelines on model management and best practices.
  SAP Community: Check the SAP Community forums for similar issues and solutions shared by other developers.
  Version Control: If you are using version control, check the history of changes to see if any recent changes might have introduced the issue.
  
  By following these steps, you should be able to resolve the error and ensure that your SAPUI5 application runs smoothly without model registration conflicts.