I have tried it all (except migrating my account because it's a NO NO at the work place) and still no resolution. No one here is able to assist and doing the work manually would be tedious and time-wasting.
ISSUE
REST API is not yet supported for this mailbox. This error can occur for sandbox (test) accounts or for accounts that are on a dedicated (on-premise) mail server. clientRequestId: 5b866850-f952-4d10-af1c-41589960fa04 serviceRequestId: c2e0de5f-429d-223a-b9e5-dc9a3ac062f5
Please assist! You will save a life.
Dear Is2,
What is it that you are trying to do and why?
To an external party, not privy to your circumstances, your issue is not clear enough to try and think of a solution.
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