Event linkage for event type &1 is disabled or does not exist.

What causes this issue?

Event linkage for event type &v1& is disabled or does not exist.

System Response

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

How to fix this error?

Please contact your system administrator.

Procedure for System Administrators

Start transaction SWE2 and activate the event type linkage for the
following event.
Object Category: ABAP Class
Object Type: &v2&
Event: &v3&
Receiver Type: &v4&

Error message extract from SAP system. Copyright SAP SE.