HMRC's message · HTTP 400
Income sources data has changed. Trigger a new calculation
When it appears
Submitting a final declaration.
What to check
- Whether a business was added or ceased since the calculation.
How to fix it
Trigger a new final calculation, review it with the client, 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.