How to get the number of licenses not assigned to a user using MicrosoftGraphAPI(C#)

Question

Using MicrosoftGraph, is there a way to get the number of licenses not assigned to a user? "the number of licenses not assigned to a user" correspond to the red frame in the image below.

The Microsoft 365 admin center

I would like to get the number of BusinessBasic licenses.

Answer 1

While not directly exposed, you can calculate this from the information exposed as part of the https://graph.microsoft.com/v1.0/subscribedSkus query. The prepaidUnits will give you the total number of seats available for a given SKU, whereas the consumedUnits gives you the currently assigned ones. Substract the numbers to get the number of unassigned seats.

GET https://graph.microsoft.com/v1.0/subscribedSkus
    {
    "capabilityStatus": "Enabled",
    "consumedUnits": 5,
    "skuId": "87bbbc60-4754-4998-8c88-227dca264858",
    "skuPartNumber": "POWERAPPS_INDIVIDUAL_USER",
    "appliesTo": "User",
    "prepaidUnits": {
        "enabled": 10000,
        "suspended": 0,
        "warning": 0
    }

Answer 2

Hi @南薗直弥

@Vasil Michev gave an idea, if you are using graph C# SDK, refer to my code:

using Azure.Identity; 
using Microsoft.Graph;    


try
{
      var scopes = new[] { "https://graph.microsoft.com/.default" };

      var tenantId = "tenant id";

      // Values from app registration
      var clientId = "client id";
      var clientSecret = "client secret";

      // using Azure.Identity;
      var options = new TokenCredentialOptions
      {
            AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
      };

      // https://learn.microsoft.com/dotnet/api/azure.identity.clientsecretcredential
      var clientSecretCredential = new ClientSecretCredential(
            tenantId, clientId, clientSecret, options);


      GraphServiceClient graphClient = new GraphServiceClient(clientSecretCredential,scopes);

      var subscribedSkus = await graphClient.SubscribedSkus
            .Request()
            .GetAsync();

      for (int i = 0; i < subscribedSkus.Count; i++) {

      var sub = subscribedSkus[i].PrepaidUnits.Enabled - subscribedSkus[i].ConsumedUnits;

            if (sub != null) {

                  Console.WriteLine(subscribedSkus[i].SkuPartNumber + ":" + sub);   
            }              
      }          
}
catch (Exception ex) { 

      Console.WriteLine(ex);
}

![277866-image.png][1]

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