We appreciate you dropping by here in the Community forum, contact178. I'll ensure you get help from the appropriate support to sync your service library with QuickBooks.

QuickBooks Online will depend on the data provided by Square. Therefore, I recommend contacting the Square support team for assistance. They can verify whether syncing the service library with QuickBooks is an option and guide you through the necessary steps.

On the other hand, ensure to categorize and match your sales transactions once they're ready in QuickBooks to keep your record accurate.

We are committed to promptly addressing your needs as you manage your Square account in QuickBooks Online. Please return to this thread and leave a reply below so we can get back to you as soon as possible.