Troubleshooting

1. Select Find from the menu and enter Northern Residents Deduction.
2. From the list of search results, select Northern Residents Deduction, then select Go
3. If you  are qualify then select the Qualifies button
4. Enter the Period of residence with Zone selection(A/B), From and To dates, Place and Prov/Terr. values, then select Continue
5. Enter the Northern Residents Deduction - Trips if you want to or keep it blank, then select Continue
6. Then you will see the Additional Residence Amount page and have to enter the Number of days that qualify for the additional residence amount and this value should be between 0 to number of days mentioned above(Number of days calculated for the residency amount:), then select continue

For more info, please refer to this Turbotax FAQ link:https://turbotax.intuit.ca/tips/understanding-the-northern-residents-deduction-5478