Mark VAT return as submitted

I understand the importance of marking the return as filed in QuickBooks Online (QBO), RhiannaWP. I have some information to share to answer your inquiry about this.

Our system shows there is an open investigation (INV-116084) regarding the error message you've encountered when filing your VAT return through QBO. 

Our engineering team is already looking into this issue to sort this out.  We've also created a tracking list of all affected users. Everyone on this list will be notified once the error message has been resolved.

Having said that, please contact our phone or chat support teams for us to add you to it. Here's how to reach out to them: 

1. Click the Help menu in the upper-right-hand corner of QBO.
2. Proceed to the Assistant tab.
3. Type in "contact support" and press Enter.
4. Select QuickBooks Online Support, then click Contact Us at the bottom of the screen.
5. Click Ask about something else, then enter a short description of your concern or provide INV-116084 as a reference.
6. Choose between Have us call you or Chat.

If you have any further questions or concerns about filing your VAT return or other VAT-related questions, please don't hesitate to visit the Community page for additional support.  I'd be happy to get back here and provide further assistance.