There is many way to get to star schema.
use Year&Month as Key in ISC,Finance and MasterCalendar
Remove Division & 214 JOP from ISCData (assume there are the same as in Finance Data)and the
Date as ISCDate
Plan as ISCPlan
or use Qualify
It is easiest to resolve synthetic keys if you add new tables to the data model one at a time, and resolve any synthetic keys that exist before adding the next table.
Adding an "Exit Script" command is helpful - I often use this in a tab on its own that I can promote or demote through the script when testing.