Harvest cannot copy this invoice to QuickBooks Online. Looks like you have two taxes on it, and QuickBooks Online accepts only one tax. How can I fix this?

Hi pharmaphil-gmail,

Welcome to Community!  It's important that you're able to integrate your Harvest transactions with QuickBooks Online seamlessly.  I'd be glad to assist!

To ensure a smooth transition of your invoices, the information in Harvest must match exactly with QuickBooks Online.  You'll need to review your sales tax codes and any products or services with a default tax code applied.  This should be compared to what you have recorded on your forms in Harvest.  Corrections should be made, to ensure a positive outcome.  Here's a helpful guide to assist with Managing Sales tax in QuickBooks Online.

If you require additional assistance, please reach out to Harvest support, or contact us outside of Community.  We'd appreciate the opportunity to work with you directly and get you back to business as soon as possible!

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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Feel free to reach back out, if you have other questions.  We're here for you!