Hi paul198,
Do you have any error message as you tried to lodge your STP? Appreciate if you can give us more information so we can help you on getting this resolved.
Also, you can check on this article for your reference: Troubleshooting validation warnings for STP Events.
If you prefer to discuss your concern via phone, feel free to contact our QuickBooks support team.
Feel free to let me know if you need any help. Have a great day!