CRA error message

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when I netfile my 2018 tax return I get an error from CRA saying One or more entries in your financial statement(s) 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 Developer.  

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I worked through this with TurboTax support, and it appears that trying to have a sole proprietorship with non Dec31 year end, is not supported by Standard edition.  Since this wasn't important to me, I changed to Dec31 year-end and everything went through.

I have been a user for over 10 years, and this is the first time I have had to talk to support.