How To Fix /UI2/CDMFCC084 - Invalid &1 &2: Not unique ID in &3( duplicate="&4" )

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMFCC -

• Message number: 084

• Message text: Invalid &1 &2: Not unique ID in &3( duplicate="&4" )

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/CDMFCC084 - Invalid &1 &2: Not unique ID in &3( duplicate="&4" ) ?

  The SAP error message /UI2/CDMFCC084 Invalid &1 &2: Not unique ID in &3 (duplicate="&4") typically indicates that there is a problem with the uniqueness of identifiers in the context of SAP Fiori or UI5 applications. This error usually arises when there are duplicate IDs for UI elements or components that are expected to be unique within a certain scope.
  Cause:
  
  Duplicate IDs: The most common cause of this error is that there are multiple UI elements (like buttons, inputs, etc.) that have been assigned the same ID within the same view or component. In SAP UI5, each control must have a unique ID to function correctly.
  Incorrect Binding: Sometimes, if you are binding data to a UI element and the data source contains duplicate keys, it can lead to this error.
  Dynamic Creation of Controls: If controls are created dynamically (e.g., in a loop) without ensuring unique IDs, this can also lead to duplicates.
  
  Solution:
  
  Check for Duplicate IDs: Review the code where UI elements are defined. Ensure that each element has a unique ID. You can use a naming convention that incorporates a unique identifier (like an index or a unique key from the data).
  Use sap.ui.core.ID: When creating controls dynamically, use the sap.ui.core.ID to generate unique IDs. This can help avoid collisions.
  Data Binding: If the error is related to data binding, ensure that the data source does not contain duplicate keys. You may need to filter or transform the data to ensure uniqueness.
  Debugging: Use debugging tools to trace where the duplicate IDs are being generated. This can help identify the specific part of the code that needs to be corrected.
  Review Component Structure: If you are using fragments or views, ensure that IDs are unique across these components as well.
  
  Related Information:
  
  SAP UI5 Documentation: Refer to the official SAP UI5 documentation for best practices on ID management and control creation.
  Fiori Elements: If you are using Fiori Elements, ensure that your annotations and metadata are correctly defined to avoid conflicts.
  SAP Community: Check the SAP Community forums for similar issues and solutions shared by other developers.
  
  By addressing the uniqueness of IDs in your application, you should be able to resolve the error message and ensure that your SAP UI5 application functions correctly.