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Which tenant ID do I have to use to get tokens and API responses using OAuth for external tenants?

Steve Morris 0 Reputation points
2024-02-13T08:04:11.33+00:00

I am trying to get external tenant's company data from the business central.
I am able to generate access token and get the company response from the OAuth API for external tenant login. (Here I have used the App's tenant ID so it gets the app tenant company file) I need to get the external tenants company file. Is there any API changes in the API using the external tenants ID (which is under 'help & suppot' in the business central).   Is there any changes in the below API if I need to get the response for external tenant? 

string accessToken = string.empty;
 using (HttpClient client = new HttpClient())
 {
     string tokenEndpoint = https://login.microsoftonline.com// + tenant_Id + //oauth2/v2.0/token/;
     var tokenRequestContent = new FormUrlEncodedContent(new[]
     {
         new KeyValuePair<string, string>(/grant_type/, /authorization_code/),
         new KeyValuePair<string, string>(/code/, code),
         new KeyValuePair<string, string>(/client_id/, client_Id),
         new KeyValuePair<string, string>(/client_secret/, client_secret),
         new KeyValuePair<string, string>(/redirect_uri/, redirectUri),
         new KeyValuePair<string, string>(/scope/, /openid offline_access/),
     });      *HttpResponseMessage responseval = await client.PostAsync(tokenEndpoint, tokenRequestContent);
     if (responseval.IsSuccessStatusCode)
     {
        string jsonResponse = await responseval.Content.ReadAsStringAsync();
        dynamic json = JObject.Parse(jsonResponse);
        accessToken = json.access_token != null ? json.access_token : //;
     }
 }

  using (HttpClient client1 = new HttpClient())
  {
      string companiesEndpoint =https:/api.businesscentral.dynamics.com/v2.0// + tenant_Id + //Production/api/v2.0/companies/;
      string Access_Token = accessToken.ToString();
      client1.DefaultRequestHeaders.Add(/Authorization/, /Bearer / + Access_Token);
      HttpResponseMessage response1 = await client1.GetAsync(companiesEndpoint);
      if (response1.IsSuccessStatusCode)
      {
          string jsonResponsevalue = await response1.Content.ReadAsStringAsync();
          var Items = JsonConvert.DeserializeObject<dynamic>(jsonResponsevalue);
      }
  }*

Windows 365 Business
Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. James Hamil 22,436 Reputation points Microsoft Employee
    2024-02-13T19:35:22.1466667+00:00

    Hi @Steve Morris , to get tokens and API responses using OAuth for external tenants, you need to use the tenant ID of the external tenant. The tenant ID is a unique identifier for the tenant, and it is different for each tenant.In your code, you are using the tenant_Id variable to specify the tenant ID. To get the external tenant's company file, you need to replace the tenant_Id variable with the external tenant's tenant ID. The API endpoint for getting the company file is https://api.businesscentral.dynamics.com/v2.0/{tenant-id}/Production/api/v2.0/companies/. You need to replace {tenant-id} with the external tenant's tenant ID. Here is an updated version of your code with the changes:

    string accessToken = string.Empty;
using (HttpClient client = new HttpClient())
{
    string tokenEndpoint = "https://login.microsoftonline.com/" + tenant_Id + "/oauth2/v2.0/token/";
    var tokenRequestContent = new FormUrlEncodedContent(new[]
    {
        new KeyValuePair<string, string>("grant_type", "authorization_code"),
        new KeyValuePair<string, string>("code", code),
        new KeyValuePair<string, string>("client_id", client_Id),
        new KeyValuePair<string, string>("client_secret", client_secret),
        new KeyValuePair<string, string>("redirect_uri", redirectUri),
        new KeyValuePair<string, string>("scope", "openid offline_access"),
    });
    HttpResponseMessage responseval = await client.PostAsync(tokenEndpoint, tokenRequestContent);
    if (responseval.IsSuccessStatusCode)
    {
        string jsonResponse = await responseval.Content.ReadAsStringAsync();
        dynamic json = JObject.Parse(jsonResponse);
        accessToken = json.access_token != null ? json.access_token : string.Empty;
    }
}

using (HttpClient client1 = new HttpClient())
{
    string companiesEndpoint = "https://api.businesscentral.dynamics.com/v2.0/{external-tenant-id}/Production/api/v2.0/companies/";
    string Access_Token = accessToken.ToString();
    client1.DefaultRequestHeaders.Add("Authorization", "Bearer " + Access_Token);
    HttpResponseMessage response1 = await client1.GetAsync(companiesEndpoint);
    if (response1.IsSuccessStatusCode)
    {
        string jsonResponsevalue = await response1.Content.ReadAsStringAsync();
        var Items = JsonConvert.DeserializeObject<dynamic>(jsonResponsevalue);
    }
}

    Replace {external-tenant-id} with the external tenant's tenant ID.

    Let me know if this works. If not please let me know and I can help you further!

    If this answer helps you please mark "Accept Answer" so other users can reference it.

    Thank you,

    James

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