HMRC's message · HTTP 422
Request cannot proceed for this income source type
When it appears
Setting the quarterly period type for a business.
What to check
- The type of business the request is for.
How to fix it
Check which income sources the change applies to, and make it only for those.
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.