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 shows HMRC's code and message next to a plain explanation, and keeps HMRC's reply against every submission.