HMRC's message · HTTP 400
More recent submissions exist. Trigger a new calculation
When it appears
Submitting a final declaration.
What to check
- Updates or adjustments sent since the calculation.
How to fix it
Trigger a new final calculation and declare that one.
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.