I registered one Azure AD application and granted API permissions of **Application** type like this:
Initially, I too got **same error** when I ran your code with `/beta` in container URL like this:
```csharp
private async Task<PlannerPlan?> CreatePlan(Guid id, string planName)
{
var requestBody = new PlannerPlan
{
Container = new PlannerPlanContainer
{
Url = $"https://graph.microsoft.com/beta/groups/{id}"
},
Title = planName
};
var graphClient = GetGraphClient();
try
{
return await graphClient.Planner.Plans.PostAsync(requestBody);
}
catch (Microsoft.Graph.Models.ODataErrors.ODataError oDataError)
{
var error = oDataError.Error;
throw;
}
}
```
**Response:**
To resolve the error, make use of v1.0 endpoint by modifying your code like this:
```c#
using Azure.Identity;
using Microsoft.Graph;
using Microsoft.Graph.Models;
using System;
class Program
{
static async Task Main(string[] args)
{
var scopes = new[] { "https://graph.microsoft.com/.default" };
var tenantId = "tenantId";
var clientId = "appId";
var clientSecret = "secret";
var options = new TokenCredentialOptions
{
AuthorityHost = AzureAuthorityHosts.AzurePublicCloud,
};
var clientSecretCredential = new ClientSecretCredential(tenantId, clientId, clientSecret, options);
var graphClient = new GraphServiceClient(clientSecretCredential, scopes);
try
{
var groupId = "groupId"; // Group ID where you want to create the plan
var createdPlan = await CreatePlan(new Guid(groupId), "Demo Plan1", graphClient);
Console.WriteLine($"Plan Title: {createdPlan.Title}");
Console.WriteLine($"Plan ID: {createdPlan.Id}");
}
catch (Microsoft.Graph.Models.ODataErrors.ODataError oDataError)
{
var error = oDataError.Error;
Console.WriteLine(error.Code);
Console.WriteLine(error);
}
}
private static async Task<PlannerPlan?> CreatePlan(Guid id, string planName, GraphServiceClient graphClient)
{
var requestBody = new PlannerPlan
{
Container = new PlannerPlanContainer
{
Url = $"https://graph.microsoft.com/v1.0/groups/{id}"
},
Title = planName
};
try
{
return await graphClient.Planner.Plans.PostAsync(requestBody);
}
catch (Microsoft.Graph.Models.ODataErrors.ODataError oDataError)
{
var error = oDataError.Error;
throw; // Rethrow the exception to propagate it
}
}
}
```
**Response:**
**Reference:**
[plannerPlanContainer resource type - Microsoft Graph v1.0 ](https://learn.microsoft.com/en-us/graph/api/resources/plannerplancontainer?view=graph-rest-1.0)
The error occurred as you missed granting `Tasks.Read.All` permission that is required to list plans within group while using client credentials flow.
I registered one Entra ID application granted same **API permissions** as you:
When I tried to list plans within the group, I got **same error** like this:
To resolve the error, make sure to grant `Tasks.Read.All` permission of **Application** type by granting **admin consent** to it as below:
When I ran below code after granting required permission, I got the **response** with list of plans successfully:
```c#
using Azure.Identity;
using Microsoft.Graph;
class Program
{
static async Task Main(string[] args)
{
var scopes = new[] { "https://graph.microsoft.com/.default" };
var tenantId = "tenantId";
var clientId = "appId";
var clientSecret = "secret";
var options = new TokenCredentialOptions
{
AuthorityHost = AzureAuthorityHosts.AzurePublicCloud,
};
var clientSecretCredential = new ClientSecretCredential(tenantId, clientId, clientSecret, options);
var graphClient = new GraphServiceClient(clientSecretCredential, scopes);
try
{
var plans = await graphClient.Groups["groupId"].Planner.Plans.GetAsync();
foreach (var plan in plans.Value)
{
Console.WriteLine($"Plan Title: {plan.Title}");
Console.WriteLine($"Plan ID: {plan.Id}");
}
}
catch (Exception exception)
{
Console.WriteLine($"{exception.GetType().FullName}: {exception.Message}");
}
}
}
```
**Response:**
**Reference:**
[List plans - Microsoft Graph v1.0](https://learn.microsoft.com/en-us/graph/api/plannergroup-list-plans?view=graph-rest-1.0&tabs=http#permissions)
