The user has a number of properties that are not stored in Azure AD, such as
"aboutMe, birthday, hireDate, interests, mySite, pastProjects, preferredName, responsibilities, schools, skills"
They also cannot be obtained using the request
https://docs.microsoft.com/en-us/graph/delta-query-overview#properties-stored-outside-of-the-main-data-store
"GET /users"
They also cannot be obtained using the /delta request. If there are a lot of users in AAD, for example, more than 9,000, then to get these properties it will be necessary to make a request for each user to get these attributes.
_graphClient.Users[id].Request().Select("aboutMe, birthday, hireDate, interests, mySite, pastProjects, preferredName, responsibilities, schools, skills, id");
And this will lead to the second problem that I encountered code I get information about all these users in less than 10 minutes. This is the Retry-After response after about 9,000 requests.. The documentation says that there is an additional header "x-ms-throttle-limit-percentage" which notifies how many resources are left for these requests before the "Retry-After" will work, but I did not receive this header for this type of requests
https://docs.microsoft.com/en-gb/graph/throttling?view=graph-rest-1.0#regular-responses-requests
I have a question, the header "x-ms-throttle-limit-percentage" should come for properties that are outside of AAD, for example in SharePoint Online?
