No, it's not because you're filing your return late. If you miss the filing deadline, you can still file your tax return. However, the CRA will charge a penalty for your balance owing if you have an outstanding amount for the tax year.
NETFILE error 90317 means you're not registered with the Canada Employment Insurance Commission (CEIC). You must be registered with the CEIC online to use NETFILE.
If you're registered and you're still getting this error, you need to print and mail your tax return.
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