Test output not allowed for correspondence type &2 by its definition

What causes this issue?

For the correspondence request with correspondence key &V1&, test output
is not allowed since this is explicitly prohibited in Customizing in the
definition of correspondence type &V2&.

System Response

There is no test output for the correspondence request.

How to fix this error?

If you want to allow the <PF>Test Output</> function for correspondence
type &V2&, change the definition of correspondence type &V2& in
Customizing. Since test output was not allowed in the definition of the
correspondence type, this change can lead to problems. Never make this
change in a live system.

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.

INCLUDE ABA_FICA_NA_F5_1 OBJECT DOKU ID TX
Maintain the entry on the <LS>Miscellaneous</> tab page.

Error message extract from SAP system. Copyright SAP SE.