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

SAP Error Message - Details

• 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

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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 function modules related to the application IDs.
  
  
  
  Modify Application IDs:
  
  If you find duplicate application IDs, you will need to modify one of them to ensure that each application has a unique ID.
  This may involve changing the ID in the application configuration or in the transport request.
  
  
  
  Check Transport Requests:
  
  If the issue arose after a transport, check the transport requests to see if the same application was included multiple times.
  You may need to adjust the transport requests to avoid conflicts.
  
  
  
  Clear Cache:
  
  After making changes, clear the cache to ensure that the system recognizes the updates. You can do this using transaction SE80 or by using the command /UI2/FLP_CLEANUP to clear the Fiori Launchpad cache.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to Web Dynpro applications for any specific guidelines or best practices regarding application IDs.
  
  
  
  Related Information:
  
  Web Dynpro: A technology for developing web applications in SAP.
  Application ID: A unique identifier for each Web Dynpro application.
  Namespace: A way to avoid naming conflicts by grouping related objects under a unique prefix.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with your SAP Basis team for further assistance.