HMRC's message · HTTP 400
totalVatDue should be equal to the sum of vatDueSales and vatDueAcquisitions
When it appears
Submitting a VAT return.
What to check
- Boxes 1, 2 and 3, including rounding.
How to fix it
Make box 3 the sum of boxes 1 and 2, and resend.
Making Tax Digital in Accountin
Accountin will send VAT returns and income tax updates to HMRC once HMRC grants it live access. It then shows HMRC's code and message next to a plain explanation, and keeps HMRC's reply against every submission.