For operating concern &, no table has been defined

What causes this issue?

No database table has been defined for operating concern &V1&.

System Response

The system checks whether a structure has been defined for the
operating concern. If this is not the case, it displays an error
message.

How to fix this error?

Before you can process this operating concern, you must define a
database structure. You do this with the function "Generate" when you
create or change an operating concern
in CO-PA Customizing.

Error message extract from SAP system. Copyright SAP SE.