HMRC's message · HTTP 400
netVatDue should be the difference between the largest and the smallest values among totalVatDue and vatReclaimedCurrPeriod
When it appears
Submitting a VAT return.
What to check
- Boxes 3, 4 and 5.
- Box 5 is entered as a positive figure.
How to fix it
Set box 5 to the difference between boxes 3 and 4, as a positive number.
Making Tax Digital in Accountin
Accountin shows HMRC's code and message next to a plain explanation, and keeps HMRC's reply against every submission.