https://learn.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/migration-upgrade/upgrade-functional-validation
Upgrade from AX 2012 - Functional test passes - Finance & Operations | Dynamics 365 | Microsoft...
Learn about how to perform a functional test pass to validate an upgraded finance and operations environment, including an overview on old data versus new data.
upgrade from axfunctional test