There are &1 CDS-entities that lack a connector

What causes this issue?

CDS-entities slipped the obligatory activation for Enterprise Search.
Each CDS-entity relevant for Enterprise Search (i.e. with annotation
@EnterpriseSearch.enabled) must have a corresponding search connector;
which then might have an error status.

System Response

The CDS-entities are missing in all connector lists and are consequently
not available for search.

How to fix this error?

You can enforce the activation by running a complete activation e.g. via
task list SAP_ESH_CONFIGURATION/ step "Activate CDS views with
@EnterpriseSearch annotation" or from transaction ESH_DASHBOARD.

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.