Error: Australian Residency start date and Australian residency end date must be provided.

Solution: You have to report the residency  "start date" and "end date"

Explanation: If user reported the Part-year-tax-free threshold" via A2-

The system will ask to fill the "Australian residency start and end date"

Note: Residency start and end dates are equal to lodgment period. ie, if the client is Australian resident for full period then these fields should be removed and also number of months from “A2 Part-year tax-free threshold” should be removed too.