You now understand your migration system inputs both Source  and Target,  you have a mapped and cleaned data set and now it needs testing properly by the Users of the systems to ensure you have a successful migration and to determine the Migration Go Live Plan . 

For each business process identified in the Target Step, a UAT Testing Document should be created and recorded in a global list to track the progress.

Core Tasks for this Milestone:

A) Create and Assign UAT Testing Sheets to Users

B) Create a UAT Testing List - Issue Log