How To Fix CFD_REGISTRY_UI020 - CDS View entry &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REGISTRY_UI - Custom Fields: Registry UI Messages

• Message number: 020

• Message text: CDS View entry &1 already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_UI020 - CDS View entry &1 already exists ?

  The SAP error message CFD_REGISTRY_UI020 indicates that there is an attempt to create a CDS (Core Data Services) view entry that already exists in the system. This error typically arises when you are trying to register a CDS view that has already been registered, or when there is a conflict with an existing entry.
  Cause:
  
  Duplicate Registration: The most common cause is that the CDS view you are trying to register has already been registered in the system.
  Transport Issues: If you are working in a transport environment, it is possible that the CDS view was already transported to the target system.
  Development Environment: If multiple developers are working on the same CDS view, one might have already registered it while another is trying to do the same.
  System Cache: Sometimes, the system cache may not be updated, leading to inconsistencies.
  
  Solution:
  
  Check Existing Entries: Verify if the CDS view is already registered. You can do this by checking the relevant tables or using transaction codes like SE11 or SE80 to look for existing entries.
  Remove Duplicate Registration: If you find that the CDS view is already registered and you do not need the new registration, you can skip the registration process.
  Modify Existing View: If you need to make changes to the existing CDS view, consider modifying the existing entry instead of trying to create a new one.
  Clear Cache: If you suspect that the issue is related to caching, you can try clearing the cache. Use transaction SLG1 to check for logs and SICF to manage services.
  Transport Management: If the issue is related to transport, ensure that the transport requests are correctly managed and that there are no conflicts between development and production environments.
  Consult Documentation: Review the SAP documentation or notes related to CDS views for any specific guidelines or known issues.
  
  Related Information:
  
  CDS Views: Core Data Services are a way to define semantically rich data models in SAP systems. They are used extensively in SAP S/4HANA and SAP Fiori applications.
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), and SLG1 (Application Log) for troubleshooting.
  SAP Notes: Check SAP Notes for any updates or patches related to CDS views and the specific error message you are encountering.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance.