QuickBooks Integration: FAQs
Common questions about connecting and syncing QuickBooks Online with Lessen Pro.
OverviewThe QuickBooks Online integration allows Lessen Pro to automatically sync your customers, services, invoices, and payments to QuickBooks — for both self-managed and Lessen-dispatched work orders. The integration is managed from Business Settings > My Applications.
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What syncs between Pro and QuickBooks? The following sync from Pro to QuickBooks Online: - Customers
- Services
- Invoices
- Payments
📋 On first setup only, you can also import your existing QuickBooks customers into Pro. |
How do I set it up? From Business Settings > My Applications, connect your QuickBooks Online account. During setup you will: - Link your chart of accounts
- Choose whether to import your existing QBO customers into Pro
- Configure sync settings to control what flows across
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Does my Lessen work sync to QuickBooks? Yes — Lessen invoices sync to QuickBooks Online alongside your self-managed invoices. |
My sync failed — what do the errors mean? Accounting period is closed | QuickBooks won't accept records dated in a closed period. Reopen the period in QBO or adjust the record's date, then retry. |
QuickBooks account status | Your QBO connection or account is inactive. Reconnect from Sync Settings. |
Critical error during sync / API failure | A temporary QuickBooks issue. Retry from the Sync Center. Contact support if it persists. |
Customer error or warning | Usually a mismatch or duplicate customer record. Review the customer in both Pro and QBO, then retry. |
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How do I retry a failed sync? Use the Sync Center to retry. If the failure was caused by an unlinked account, you can link your chart of accounts directly as part of the retry flow. |
I archived a service and it disappeared from QuickBooks. Archived services do not sync to QuickBooks. If you need the service to sync again, restore it in Lessen Pro. 📌 Restoring a service will resume syncing it to QuickBooks going forward. |
💡 Best Practice - Link your chart of accounts carefully during setup — mismatched accounts are a common cause of sync errors
- Check the Sync Center regularly to catch and resolve failed syncs early
- If you see a customer error, review the record in both Pro and QBO before retrying — duplicates are the most common cause
- Keep your QuickBooks Online accounting periods open until all invoices for that period have synced successfully
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