2018 Personal Information - Worksheet is not allowing me to enter the 9 digit SIN for the spouse section, this will only accept 8 digits
Please make sure that you are not using spaces when
you enter the SIN #. Ex: 123456789, not 123 456 789.
If you are still unable to resolve this issue,
please contact our phone support as they will be better able to assist you
(*Not available for TurboTax Free users*). https://turbotax.community.intuit.ca/replies/3152013