We couldn't Add the transaction(s) due to "Make sure all your transactions have a GST/HST rate before you save.". Try again later.

Hi legionbr609,

Thanks for reaching out here.  Welcome!  Having the ability to upload your transactions in QuickBooks Online is key, in keeping your books balanced.  I recommend contacting us outside of Community.  This will provide us with the opportunity to work with you directly and look further into the unexpected behavior in more depth from our end.

Schedule a Callback or start a Chat: click (?) Help in the upper right in QuickBooks Online > enter "Contact support" > hit Contact Us > provide a brief summary of your situation > hit Let's Talk > choose Get a callback or Start a Chat.
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If any other questions or concerns come to mind, feel free to reach out again.  We'd be happy to help!