How To Fix /UI5/MP_CA012 - Property to insert already exists in base descriptor: &1

/UI5/MP_CA012 - Overview

• Message type: E = Error

• Message class: /UI5/MP_CA -

• Message number: 012

• 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.

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_CA012 - Property to insert already exists in base descriptor: &1 ?

  The SAP error message /UI5/MP_CA012 Property to insert already exists in base descriptor: &1 typically occurs in the context of SAPUI5 or Fiori application development. This error indicates that there is an attempt to add a property to a UI5 component or descriptor that already exists in the base descriptor. 
  
  Cause:
  
  
  Duplicate Property Definition: The most common cause of this error is that a property is being defined in a UI5 component or controller that has already been defined in a parent or base descriptor. This can happen if you are trying to extend a UI5 control or component and inadvertently redefine a property that is already present.
  
  
  Inheritance Issues: If you are using inheritance in your UI5 application, the child component may be trying to add a property that is already defined in the parent component.
  
  
  Configuration Errors: There may be configuration issues in the manifest file or in the component.js file