How unique is a drive item-id in the ms graph api?

Question

What guarantees does the graph API offer regarding the uniqueness of a drive item-id?

reference - https://learn.microsoft.com/en-us/onedrive/developer/rest-api/resources/driveitem?view=odsp-graph-online

Is a drive item-id unique:

1. within a drive
2. within a site
3. within a tenant
4. globally/universally unique
5. something else

We want to globally uniquely identify a drive item in our own data store. We think we might have to store a drive-id with the item-id to uniquely identify it. But are looking for confirmation.

Answer 1

Hi @R Depping

Yes, the drive item-id is unique in the world, each item in OneDrive or SharePoint has a unique identifier that distinguishes it from all other items, ensuring that each file or folder can be individually accessed and managed regardless of its location or ownership.

Hope this helps.

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Answer 2

Hi R Depping,

Thank you for reaching out, Microsoft!

Please refer the below doc which clearly mentions property id is unique identifier of the item within the Drive.

https://learn.microsoft.com/en-us/graph/api/resources/driveitem?view=graph-rest-1.0#properties

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