https://graph.microsoft.com/v1.0/me/messages/ - response error code - OrganizationFromTenantGuidNotFound

Question

Listing the inbox mails do we need to buy subscription plan? After generating the OAuth 2.0 token and calling this method https://graph.microsoft.com/v1.0/me/messages/ and the response is

{"error":{"code":"OrganizationFromTenantGuidNotFound","message":"The tenant for tenant guid
'8baab99c-e9d6-4f36-a518-11ad2e86e412' does not
exist.","innerError":{"oAuthEventOperationId":"418b7a4b-05d4-441e-b008-1c97f4d037e0","oAuthEventcV":"0fRQ3JiQ+a1k485+eiGALw.1.1","errorUrl":"https://aka.ms/autherrors#error-InvalidTenant","requestId":"ffb82041-fa32-436b-964c-279dedb1ef96","date":"2023-10-11T19:52:37"}}}

Answer 1

Hi @DEV TEST

Yes, you need to have an O365 license to list mail, users with an O365 license will be automatically assigned an EXO mailbox.

Hope this helps.

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