'Graph API: IDs of Microsoft Teams entities can be duplicate?

In our code, we have this assumption that IDs of all Microsoft Teams entities (e.g. Team, Channel, Tab) in a Microsoft O365 tenant are unique. (These IDs are returned by the Graph API queries.)

Microsoft document is not very clear on this. I can see that most of the IDs are GUIDs so it looks like a safe assumption and I think can assume that these entities can not have duplicate ID in a tenant. Let me know if anyone has seen any different behavior.

microsoft-graph-apimicrosoft-teams


Solution 1:[1]

These are Guids, as you say, so they should be "globally" unique, aside from a specific tenant. Be aware though that the Id of the "General" channel in a team is actually the same Id as the team itself, so you might see some "duplication" from that perspective.

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Solution Source
Solution 1 Hilton Giesenow

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