Thank you for joining the conversation, Michael.

I also appreciate that you included a screenshot to your question. I recommend clicking on the Take Action button to see if there are any specific instructions or steps you need to follow in order to successfully submit your tax return.

Another step to fixing the issue could be simply checking if you have any open obligations with HMRC. If you have outstanding obligations, HMRC won't process your return until they are fulfilled. Ensure all obligations are settled before submitting your return.

Access your HMRC online account to review open obligations, including any taxes due. Confirm everything is up to date before attempting to submit a return through MTD again.

I'm also sharing this article: Fix MTD issues and errors in QuickBooks Online. This additional reference will be helpful in addressing any further concerns or difficulties you may encounter while filing your taxes with the HMRC.

If you need further assistance with your tax filing process, please don't hesitate to reach out. Take care and have a great day!