The upgrade march continues as well with Microsoft Dynamics GP 2018 R2 and Year-End Update – Version Checks & Upgrades
Microsoft Dynamics GP 2018 R2 and Year-End Update – Version Checks & Upgrades
Install, Upgrade & AdminPayables & ReceivablesYear-End & 1099GP 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.