We have seen an issue with recent QuickBooks version update, where it Auto turned on “Custom transaction numbers” option. This stops
‘Invoice number” generation when the DBSync tries to sync the Orders/Opportunities from Salesforce to QuickBooks Online as Invoice.
We can resolve the issue by following the steps mentioned below.
1. Click the Gear icon > “Account and Settings” or “Company Settings” if you are using the Accountant module.
2. For customer numbers on sales forms:
a. Click “Sales” on the left, and then select the edit icon for “Sales form content”.
b. Disable/Turn off “Custom transaction numbers” option, and then click Save.
