Hello there, @Andrea20A.
Appreciate you for letting me know in advance that you have checked and verified your VAT number. The VAT registration number within your QuickBooks should be the same as the one related to the gateway account you have linked to MTD.
To file your VAT return, follow the steps below.
- Within your company file, go to File VAT.
- Select File VAT instead of File VAT MTD.
- Disregard the HMRC warning.
- Click Continue. You can then file your VAT in the normal way.
Please check this link for more details: How to submit a VAT return to HMRC - MTD for QuickBooks Desktop.
If it persists, give us a short call. This way, we can further check your account and review your setup. Here's how:
- Click the Help menu and choose QuickBooks Desktop Help or press F1.
- Click Contact us at the bottom.
If you're looking for a link that will explain what Making Tax Digital (MTD) means for you and your business, you can visit this article: VAT and Making Tax Digital for QuickBooks Desktop.
Please let me know how it goes. I'll be here if you still need assistance, Andrea20A. Take care and stay safe.