How To Fix DD_CDS_ANALYSIS252 - $$projection cannot be used as an alias

DD_CDS_ANALYSIS252 - Overview

• Message type: E = Error

• Message class: DD_CDS_ANALYSIS - CDS code inspector messages

• Message number: 252

• Message text: $$projection cannot be used as an alias

What causes this issue?

"$projection" is not allowed as an alias

How to fix this error?

Choose a different alias name

Error message extract from SAP system. Copyright SAP SE.

DD_CDS_ANALYSIS252 - Details

• The SAP error message DD_CDS_ANALYSIS252 with the description $$projection cannot be used as an alias typically occurs in the context of Core Data Services (CDS) views in SAP HANA or ABAP CDS. This error indicates that there is an issue with how projections (or aliases) are being defined in your CDS view.
  
  Cause:
  The error arises when you attempt to use a projection (which is a way to select specific fields from a data source) as an alias in your CDS view definition. In CDS, projections are meant to define the structure of the data being selected, and they cannot be used interchangeably with aliases.
  
  Solution:
  To resolve this error, you should check your CDS view definition for the following:
  
  
  Review the Projection Definition: Ensure that you are not trying to use a projection as an alias. Instead, define your projections clearly and use them appropriately in your SELECT statement.
  
  
  Correct Alias Usage: If you need