Please see the TurboTax blog: My return AFR fails

"There’s another reason you might have AFR issues, according to our tax expert. The CRA’s system can’t handle more than 500 T5008 slips. If this applies to you, you might need to manually enter your data."

I think this is closest to what might be the issue. however, note that I do not have that many slips. so it should not be the problem for my case. the rest of the cases mentioned do not apply to me. any other suggestion or workaround?

We have seen some people say it worked early in the morning. It may be connected to the sheer volume on the service.... When anything goes wrong I'm a firm believer of clearing the cache/cookies for a system to work better. You may also try to turn off your antivirus while you try.

Thank you for your patience and choosing TurboTax.

Ive turned  off my anti virus and cleared the cache tried at the crack of dawn-- still the same error message.  an y ideas?

c

In order to help you with this situation, we believe your best option is to contact our telephone support team for further assistance, as they have the option to view your screen to help resolve the issue. To contact them, please follow this link: Contact Us. When asked if you wish to receive an email say NO then say "speak to a representative" then hold the line. If the issue is not resolved please as for an escalation.

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