How do I know where has errors if the error messages show as below?

[JieJessieShao]

"Your Federal return was not accepted by the CRA.

Message from CRA:

One or more entries in your tax return require correction. the data entered is either invalid, or mandatory information is missing. if you are unable to resolve the issues, please contact your software provider. "

what should I do?

[l_nadene]

Did you find out what caused this issue and how to correct it.

[kokolily]

I'm getting the same message when trying to send my return via Netfile.....were you able to resolve?

[TurboTaxSusan]

@kokolily Please double check that your NETFILE Access Code (NAC) is correct and has all 8 characters. You can also try submitting your return without the NAC. The NAC is optional and not required to file your return.

[kokolily]

Thank you.  I actually figured it out after posting my question!  Yes, that did resolve the issue (I was using the incorrect NAC - silly me)!

[TurboTaxAniqua]

@kokolily Thanks for the update.