Creating Classes from EDU Graph API

Question

Hello everyone, I am faced with this error "Object reference not set to an instance of an object"

When ever i try creating classes calling the Education Graph API,

you can please check out the following screenshots of the issue

** the 154kb screenshot-images can't upload for some reasons i don't know***

Answer 1

The 403 - Forbiden response is due to a combination of the Permission Scopes and OAuth Grant you're requesting.

Creating an educationClass requires an Application (aka App-Only) rather than Delegated (aka App+User) scopes. Since Graph Explorer only supports Delegated scopes, it cannot be used for this operation.

The type of scopes you receive is determined by the OAuth Grant you use to obtain the token:

OAuth Grant	Permission Type
Authorization Code	Delegated
Client Credentials	Application
Implicit Flow	Delegated
Password Grant	Delegated

Note that with Application scopes there is no "user" so you also cannot use Me (Graph has no way of knowing which user it should map to).

var educationClass = new EducationClass
{
    Description = "Math Level 1",
    ClassCode = "Math 501",
    ExternalId = "11019",
    ExternalName = "Math Level 1",
    ExternalSource = EducationExternalSource.Manual,
    MailNickname = "math501"
};

await graphClient // using token acquired using client_credentials
    .Education
    .Classes
    .Request()
    .AddAsync(educationClass);