How To Fix CFD_CHANGE_LOG021 - Disabled usage in CDS view '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_CHANGE_LOG - Custom Fields: Messages for Change Logging

• Message number: 021

• Message text: Disabled usage in CDS view '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_CHANGE_LOG021 - Disabled usage in CDS view '&1' ?

  The SAP error message CFD_CHANGE_LOG021, which states "Disabled usage in CDS view '&1'", typically occurs when there is an attempt to use change log functionality in a Core Data Services (CDS) view that has not been enabled for change logging. This can happen in scenarios where you are trying to track changes to data in a CDS view that is not configured to support this feature.
  Cause:
  
  Change Log Not Enabled: The CDS view in question has not been configured to allow change logging. This means that the necessary annotations or settings to enable change tracking are missing.
  Incorrect Annotations: The annotations required for enabling change logging might not be correctly defined in the CDS view.
  System Configuration: The system might not be set up to support change logging for the specific type of CDS view you are working with.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Enable Change Logging:
  
  Open the CDS view in the ABAP Development Tools (ADT) or the relevant development environment.
  Ensure that the @ChangeLog annotation is included in the CDS view definition. For example:
  @AbapCatalog.sqlViewName: 'Z_MY_CDS_VIEW'
  @ChangeLog: true
  define view Z_MY_CDS_VIEW as select from my_table
  {
      key field1,
      field2,
      ...
  }
  
  
  
  
  Check Annotations:
  
  Verify that all necessary annotations for change logging are correctly defined. This includes ensuring that the view is marked as a change log view if applicable.
  
  
  
  Review Documentation:
  
  Consult the SAP documentation for the specific version you are using to understand the requirements and limitations of change logging in CDS views.
  
  
  
  Test the Changes:
  
  After making the necessary changes, activate the CDS view and test it again to see if the error persists.
  
  
  
  Consult SAP Notes:
  
  If the issue continues, check for any relevant SAP Notes that might address known issues or provide additional guidance on enabling change logging for CDS views.
  
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining and consuming semantically rich data models in SAP systems.
  Change Logging: Change logging allows tracking of changes made to data, which can be useful for auditing and data consistency.
  SAP Documentation: Always refer to the official SAP Help Portal or the SAP Community for the latest information and best practices regarding CDS views and change logging.
  
  By following these steps, you should be able to resolve the CFD_CHANGE_LOG021 error and successfully enable change logging for your CDS view.