We have a multi-tenant setup whereby I have an account on tenant A and my account is a guest on tenant B. Both tenants have their own SharePoint sites and if I log in to tenant A, I can access and search the SharePoint on both tenants using my browser without issue.
I've create a Copilot which has the 2 SharePoint sites configured as Generative AI sources and also setup the Entra ID configuration and Manual Authentication within Copilot per the guides on the Copilot documentation - the registration being in the Entra ID on tenant A.
The Generative AI is working perfectly and answering questions and citing sources from content found on the SharePoint in tenant A but, the Copilot never answers with any content on the SharePoint in tenant B despite my account having access.
Is there any support (current or planned) for multi-tenant Generative AI?
Some of the comments from 2018 to 2020 at https://stackoverflow.com/questions/53341544/how-can-i-change-default-tenant-in-microsoft-graph-explorer lead me to believe that the Graph API, which I think is used by Generative AI, was only able to query the tenant which owns the account (tenant A in this case) but, I'm not sure if that is still the case in 2023?
