How To Fix /UI2/FND001 - Model error: More than one entity of type &1 found

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/FND -

• Message number: 001

• Message text: Model error: More than one entity of type &1 found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/FND001 - Model error: More than one entity of type &1 found ?

  The SAP error message /UI2/FND001 Model error: More than one entity of type &1 found typically occurs in the context of SAP Fiori applications when the system encounters multiple entities of the same type in a data model where it expects only one. This can lead to ambiguity in data retrieval and processing.
  Cause:
  
  Duplicate Entities: The most common cause of this error is that there are multiple entities defined in the OData service that have the same name or type. This can happen if the OData service is incorrectly configured or if there are multiple versions of the same entity.
  Model Configuration Issues: The configuration of the UI model may not be set up correctly, leading to the application trying to access an entity that is not uniquely identifiable.
  Service Metadata Issues: If the metadata of the OData service is not correctly defined or has inconsistencies, it can lead to the application encountering multiple entities.
  
  Solution:
  
  
  Check OData Service: 
  
  Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test the OData service and check the metadata. Look for duplicate entity definitions.
  Ensure that the entity names are unique and that there are no conflicting definitions.
  
  
  
  Review Model Configuration:
  
  Check the configuration of the UI5 model in your application. Ensure that the model is correctly defined and that it points to the correct OData service.
  If you are using annotations, ensure that they are correctly defined and do not lead to ambiguity.
  
  
  
  Adjust Entity Definitions:
  
  If you find duplicate entities, you may need to adjust the definitions in the backend (e.g., in the Data Dictionary or the OData service implementation) to ensure that each entity is uniquely identifiable.
  
  
  
  Clear Cache:
  
  Sometimes, caching issues can lead to this error. Clear the cache of the OData service and the browser cache to ensure that the latest definitions are being used.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes related to this issue.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. You can search for the error message or related keywords in the SAP Support Portal.
  Debugging: If you have access to the backend, you can debug the OData service to see how the entities are being retrieved and where the duplication might be occurring.
  Documentation: Review the SAP Fiori and OData documentation for best practices on defining entities and services to avoid such issues in the future.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.