where can you find the error code if the return was not accepted

[diverkj1]

CRA did not accept filing my return but there is no error code to show what to correct

[TurboTax_Susan]

You should see a message of some kind on the page that tells you that your filing didn't go through. You may also want to double check that the information that you've entered on your return is correct (Contact Info, SIN, DOB, NAC), and that your return is eligible to be sent via NETFILE. CRA File your taxes online: NETFILE eligibility