error when entering spouse social insurance number

on the personal info page, I enter my sin and the my spouse's number and it says we can not have the same SIN number, but they are not the same.

Level 2

Feb 19, 2026 7:29:22 AM

This error usually happens due to a typing or spacing error, even though the SINs are different.

You may follow the steps below to fix the error:

1. Verify your spouse's SIN again for any additional spaces or digits that are inverted.

2. Go back to Personal Info, remove your spouse, save, then re-add them and re-enter the SIN.

3. Make sure your SIN is entered under your profile and your spouse’s SIN is entered under their profile (not both in the same field)

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