Class &1 does not exist

What causes this issue?

During Activation of a CDS-View with OData.publish-Annotation a
MPC-Class will be created with the name of CDS-View.

System Response

The class was not generated-

How to fix this error?

Activate the CDS-view. If this does not create the MPC-Class create the
Class with this name manually with transaction SE24 without any logic.
Choose package and transport request from the CDS-view. This will at
least create a valid TADIR-entry. Delete the class in transaction SE24
and activate the CDS-view again.

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.