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It seems like this individual has a different date of birth on file with the CRA (older than 1957), causing the discrepancy in their age. Hopefully that's what's causing the error.

Yes, it is. I can't figure out why the software thinks this person is 65 years old. This person only has T4 income (no exemptions) and T4A(P) for CPP.

Sorry, I meant to post in the Ufile Windows version. Hopefully, it's not a huge difference.

I am trying to file a 2021 return for a 64 yr old individual, born 1957 but get the error 90113. I have not entered any OAS and the tax summary shows no amount for line 11300. Anyone know what I can do to fix this? Any help would be appreciated. Thanks!