If you get that message there is a reason on your return for them not to accept it. Did you have any change in your status? Is this your first Canadian return?
Why am I not eligible to file my tax return:
https://turbotax.community.intuit.ca/community/federal-taxes-netfile/help/why-am-i-not-eligible-to-f...
https://turbotax.community.intuit.ca/community/errors-confirmation-messages/help/how-do-i-remove-ove...
