Welcome to the Community, rileyinstallatio. 👋
Thanks for your post!
Will this be your first MTD filing using QuickBooks?
To troubleshoot this error, please check that the VAT registration number is entered within the settings (Taxes > Edit VAT > Edit settings) and that this is entered in number format only without spaces. 🧐
Hello Malcolm, Can you post a screenshot of the taxes page so we can have a look into this for you. How long have you been filing MTD in QuickBooks for as it may be the 18-month re-auth check that is stopping the filing?