Requisition doc. type & not allowed with doc. type &

What causes this issue?

It is not possible to copy a purchase requisition of document type &V1&
to create a purchasing document of type &V2&.

How to fix this error?

INCLUDE EINGABE_PRUEFEN_NA LANGUAGE EN
INCLUDE SYSADMIN_NA LANGUAGE EN
The latter can make the necessary settings using the Implementation
Guide (IMG).

Error message extract from SAP system. Copyright SAP SE.