Thank you for stopping by the Community forum today, ris. Let me share some insights about integrating applications into QuickBooks Online (QBO).
QuickBooks is an open platform that allows you to link multiple supported third-party applications. However, you can contact TikTok Shop Support to confirm whether they support integration with our product.
On the other hand, you can explore third-party apps or services that might offer this integration from this link: Apps help QuickBooks run better.
Please don't hesitate to add a comment below if you have further questions about integrating various apps into QuickBooks. I'm here to assist you with just a few clicks. Have a great day!