How To Fix ESH_ENG_CDSVAL_ES042 - '@Metadata.allowExtensions: true' is missing

ESH_ENG_CDSVAL_ES042 - Overview

• Message type: E = Error

• Message class: ESH_ENG_CDSVAL_ES - ES-CDS/ABAP: Validation of domain @EnterpriseSearch

• Message number: 042

• Message text: '@Metadata.allowExtensions: true' is missing

What causes this issue?

'@Metadata.allowExtensions' should be annotated at the view.

System Response

Without this annotation, a customer cannot refine settings like the
rendering (@UI) or the ranking definition (@Consumption.ranking) on view
level.

How to fix this error?

Add the annotation on header level of the view.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_ENG_CDSVAL_ES042 - '@Metadata.allowExtensions: true' is missing ?

  The SAP error message ESH_ENG_CDSVAL_ES042 '@Metadata.allowExtensions: true' is missing typically occurs in the context of Core Data Services (CDS) views in SAP systems, particularly when working with the SAP HANA database. This error indicates that a specific annotation, @Metadata.allowExtensions, is not defined in the CDS view definition, which is required for certain functionalities, such as allowing extensions to the CDS view.
  
  Cause:
  The error is caused by the absence of the @Metadata.allowExtensions: true annotation in the CDS view definition. This annotation is necessary when you want to allow the extension of the CDS view, which is often required in scenarios where custom fields or additional logic need to be added to the existing view.
  
  Solution:
  To resolve this error, you need to modify the CDS view definition to include the required annotation. Here’s how you can do it:
  
  
  Open the CDS View Definition: Access the CDS view in the ABAP Development Tools (ADT) or the