Hi SuperStar777,
Let's open your quote template to check if all fields match with QuickBooks fields. That's one reason why you're getting an error when viewing the form. I'd recommend checking the Download import guide too under Import Form style for your reference.
If all fields are correct and match in QuickBooks you can try the troubleshooting steps for your browser.
Try your browser's private window.
- Google Chrome: Ctrl + Shift + N
- Mozilla Firefox: Ctrl + Shift + P
- Safari: Command + Shift + N
Then, log in to QuickBooks Online and attempt to print or preview the sales form using your custom template.
If the issue persists, I'd recommend contacting our Customer Care Team to further check your template.
You might want to check out this handy link on how to Import custom form styles for invoices or estimates.
Keep me posted whenever you need further help. Have a great day.
