Data migration is a key success factor in almost every implementation. A primary concern of some customers is the speed that data can be migrated at, especially if there are vast amounts of data and a small cutover window. The Data migration framework is also used to move data as part of business requirements and operations.
A data package for a Dynamics 365 Finance and Operations app can consist of one or many data entities. A typical data package consists of a group of entities for a specific task, process, or function.
Note: A mock cutover was conducted. It was unsuccessful due to lack of coordination across the countries.
The lack of success created timing issues with data uploads from centralized IT and validation at the country level. User1 must use a standard template to prevent the mock cutover issue happening at go-live.
Reference: https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/sysadmin/optimize-data- migration