The MS team explains Microsoft Dynamics GP 2018 R2 – Allow partial purchase of quantity that originated from a Requisition
Microsoft Dynamics GP 2018 R2 – Allow partial purchase of quantity that originated from a Requisition
Off-Topic & MiscellaneousGP 2018
Archived post from 2018. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.