How To Fix /UI2/CDMFCC018 - The WDA application ID &1 is not unique. App ID &2

/UI2/CDMFCC018 - Overview

• Message type: E = Error

• Message class: /UI2/CDMFCC -

• Message number: 018

• Message text: The WDA application ID &1 is not unique. App ID &2

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 /UI2/CDMFCC018 - The WDA application ID &1 is not unique. App ID &2 ?

  The SAP error message /UI2/CDMFCC018 indicates that there is a conflict with the Web Dynpro Application (WDA) IDs in your SAP system. Specifically, it means that the application ID you are trying to use is not unique, and there is another application ID that is conflicting with it.
  
  Cause:
  
  
  Duplicate Application IDs: The primary cause of this error is that there are multiple Web Dynpro applications with the same application ID in the system. This can happen due to:
  
  Incorrect configuration or setup of Web Dynpro applications.
  Transport issues where the same application ID was transported multiple times.
  Manual creation of applications with the same ID.
  
  
  
  Namespace Issues: If the application IDs are not properly namespaced, it can lead to conflicts.
  
  
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Identify Duplicate Application IDs:
  
  Use transaction code SE80 or SE11 to search for Web Dynpro applications and check for duplicates.
  You can also use transaction SE37 to check for