HMRC's message · HTTP 403
The remote endpoint has indicated that the submission is for a tax period that has not ended
When it appears
Submitting a VAT return.
What to check
- The period end date on the obligation.
How to fix it
Submit after the period ends.
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.