Based on the documentation, we assume that for a permission of type Specific people permission must be specified with the invitation field populated. But the GET request to /users/{user-id}/drive/items/{item-id}/permissions only lists the owner’s rights, not the additional permission that we added for a specific external user.
We found this problem stating that this does not work for OneDrive for Business or SharePoint document libraries, but this answer has already exceeded one year. In addition, it is unclear what changes were made to the documents because the documents do not mention it.
Is this still true? Will it be added? Because it really does not encourage the use of the Graph API.
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