I am currently creating a PowerApp for sharing files/folders in SharePoint. For sharing I am using the Graph API.
I am using the following API endpoint:
https://graph.microsoft.com/v1.0/sites/<site-ID>/drive/items/<item-ID>/invite
Using the following body/JSON:
{
"recipients": [
{
"objectId": "6a078e6c-cecd-4906-a1df-83f6fc1cbcae"
}
],
"message": "Here's the file that we're collaborating on.",
"requireSignIn": true,
"sendInvitation": true,
"roles": [
"write"
]
}
For the Graph API, I created an app, with all the required delegated permissions.
The authentication is done with a secret.
So it works until the setting to limit external sharing to a Specific Group is set.
Then I get the error message that sharing is disabled on the SharePoint site.
Even though the app respectively the service principal is member in the group for external sharing.
I know the following alternative, but it does not meet my requirements:
Allow sharing only with existing guests and disable inviting guests by a normal user in Azure AD. Problem the sharing is possible with all existing guests.
Does anyone have an idea how I can solve the problem or has any other suggestions?
