HMRC's message · HTTP 400
amount should be a monetary value (to 2 decimal places), between 0 and 99,999,999,999.99
When it appears
Submitting a VAT return.
What to check
- Boxes 1 to 5 for negative figures or extra decimals.
How to fix it
Correct the figure 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.