Client - MTD Tax Year

A client's Making Tax Digital position for one tax year, assembled from the HMRC resources behind it: the income sources with their quarterly update deadlines and the year's tax return deadline, one source's reporting setup, and everything HMRC hold outside the client's trading income. These replaced a dozen per-resource retrieves — each of those was a browser call, an MTD service call and an HMRC call, and drawing one panel meant enough of them at once that HMRC's rate limiter refused one. Areas HMRC could not be asked about are named on the response and mean 'not asked', never 'nothing held'.