How To Fix /UI5/MP_CA_APP003 - Property to insert already exists in base descriptor: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI5/MP_CA_APP -

• Message number: 003

• Message text: Property to insert already exists in base descriptor: &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 /UI5/MP_CA_APP003 - Property to insert already exists in base descriptor: &1 ?

  The SAP error message /UI5/MP_CA_APP003 Property to insert already exists in base descriptor: &1 typically occurs in the context of SAPUI5 or Fiori applications when there is an attempt to add a property to a metadata descriptor that already exists. This can happen during the development or deployment of an application when the application tries to redefine or add a property that is already defined in the base descriptor.
  Cause:
  
  Duplicate Property Definition: The most common cause is that the property you are trying to add is already defined in the base metadata descriptor (e.g., in the OData service or the UI5 model).
  Incorrect Model Configuration: There might be an issue with how the model is configured, leading to conflicts in property definitions.
  Versioning Issues: If there are multiple versions of the same service or model, it might lead to conflicts in property definitions.
  Code Changes: Recent changes in the codebase that attempt to redefine existing properties without proper checks.
  
  Solution:
  
  Check Metadata Definitions: Review the metadata definitions in your OData service or UI5 model to ensure that the property you are trying to add does not already exist.
  Remove Duplicate Property: If you find that the property is indeed defined, you should remove the attempt to redefine it in your application code.
  Update Model Configuration: Ensure that your model configuration is correct and does not lead to duplicate property definitions.
  Clear Cache: Sometimes, caching issues can lead to this error. Clear the cache of your browser or the SAP Gateway cache to ensure that you are working with the latest version of the metadata.
  Check for Version Conflicts: If you are using multiple versions of the same service, ensure that you are referencing the correct version that does not have conflicting property definitions.
  Debugging: Use debugging tools to trace where the property is being defined and ensure that it is not being added multiple times inadvertently.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for UI5 and OData services for best practices on defining properties and metadata.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.