I'm new with the API and I want to get a custom field ScreenConnect form my connection with the OAuth2. I created my project in console.developers.google.com and I have authorized the Admin SDK. In my scope I put https://www.googleapis.com/auth/admin.directory.user.readonly.
But I can't get the variable back. If I try https://www.googleapis.com/admin/directory/v1/customer/my_customer/schemas to retrieve all custom schemas (https://developers.google.com/admin-sdk/directory/v1/guides/manage-schemas). I have the Insufficient Permission: Request had insufficient authentication scopes. But https://www.googleapis.com/admin/directory/v1/users/userKey work fine (https://developers.google.com/admin-sdk/directory/v1/reference/users/get). So the restriction isn't coming from the SDK. I think it's a url error, but I can't understand what's going on.
I solved the error the Insufficient Permission with the scope https://www.googleapis.com/auth/admin.directory.userschema I still can't find out how to get the value of the variable
The scope you are using is not the correct one since it only grants readonly access. In order to have access to what you want to achieve, you should be using this:
https://www.googleapis.com/auth/admin.directory.user;Moreover, if you want to retrieve the value set for each custom schema for a user, you will have to make the below GET request, where userKey is the user's email address.
https://www.googleapis.com/admin/directory/v1/users/userKey
In addition to this, you also have to set the customFieldMask parameter with the name of your schema name/s and the projection parameter to custom.
Therefore, for a particular user, your request will look something like this:
GET https://www.googleapis.com/admin/directory/v1/users/THE_EMAIL_OF_THE_USER?customFieldMask=NAME_OF_THE_SCHEMA&projection=custom&key=[YOUR_API_KEY]
HTTP/1.1
Authorization: Bearer [YOUR_ACCESS_TOKEN]
Accept: application/json