Why aren’t my invoice numbers showing up?

If invoice numbers are missing when invoices are sent from Contractor Accelerator to QuickBooks Online, there are a few common causes to check. Start with the simplest solution below.

Step 1: Make Sure the Customer Exists in Both Systems

Before adjusting any settings, verify that the customer still exists in both Contractor Accelerator and QuickBooks Online. If the customer was deleted in either system, the invoice will not sync properly and may be missing information like the invoice number.

• Check your customer list in both Contractor Accelerator and QuickBooks Online.
• If the customer no longer exists in one system, restore or re-enter the customer record before attempting to resend the invoice.

Step 2: Check the “Custom Transaction Numbers” Setting in QuickBooks Online

If the customer exists in both systems, the next thing to check is the “Custom Transaction Numbers” setting in QuickBooks Online. When this setting is turned on, QuickBooks Online expects users to manually enter invoice numbers—which prevents Contractor Accelerator from assigning them automatically during sync.

To check and update this setting in QuickBooks Online:

1. Log in to your QuickBooks Online account.
2. Click the gear icon and select Account and Settings.
3. Go to the Sales tab.
4. Locate the Sales form content section.
5. Make sure Custom transaction numbers is unchecked (Off).
6. Click Save, then Done.

Disabling this setting allows invoice numbers from Contractor Accelerator to sync properly going forward.

Step 3: Check Customer Mapping Between Contractor Accelerator and QuickBooks Online

If the setting above is correct and the customer exists in both systems, the issue may be due to the customer records not being mapped correctly.

To check and manually connect customers:

1. Go to your Contractor Accelerator Company Profile.
2. Navigate to Integrations > QuickBooks > Sync.
3. You’ll see a list of your customers in QuickBooks Online and a list in Contractor Accelerator.
4. Map any customers who are not currently connected.

This step ensures invoices are tied to the correct customer record during sync.