Enter a valid object type

What causes this issue?

The object type '&V1&' that you specified does not exist in the
Business Object Repository, or it has not been activated.

System Response

The system cannot propose any method containers.

How to fix this error?

Specify an existing, activated object method.
You can ignore the message. However, this means that you must then
create the call parameters yourself and make sure that the object
method is available and active at the time of the call.

Error message extract from SAP system. Copyright SAP SE.