Message type: E = Error
Message class:  SADL_GW_DT_CDS - Messages CDS Checks 
Message number: 035
Message text: Annotation '&1: &2' must not be used here.
The annotation <(>&<)>1 with the value <(>&<)>2 is used in a
non-analytical CDS view, which is not supported.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Either remove the annotation or use a valid annotation value.
Contact the corresponding developer of the CDS view to correct the
error.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message SADL_GW_DT_CDS035 typically indicates that there is an issue with the annotations used in a Core Data Services (CDS) view or in the context of a service definition. The message states that a specific annotation (denoted by &1: &2) is not allowed in the current context.
Cause: Incorrect Annotation Usage: The annotation being referenced is not valid for the context in which it is being used. This could be due to: Using an annotation that is not supported in the specific type of CDS view (e.g., using a UI annotation in a non-UI context). Misplacing the annotation in the CDS definition (e.g., placing it at the wrong level or in the wrong section). Version Compatibility: The annotation might be valid in a different version of SAP or in a different context, but not in the current version you are working with. Syntax Errors: There could be syntax errors in the CDS view definition
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