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Small and medium business | Business Central, N...
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Multi-tenant application for external tenants API to access Dynamics 365 Business Central company.

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I need to get the API response for a business central company using the multi-tenant app's client ID, and secret key.
I tried the below OAuth API to get the company's response. But I got the message as a bad request.


using (HttpClient client1 = new HttpClient())
{
    string companiesEndpoint =/https:/api.businesscentral.dynamics.com/v2.0/organizations//+environment_name+/api/v2.0/companies//;
    string Access_Token = Session[/BCAccessToken/].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);
        JArray signItemtoken1 = (JArray)Items[/value/];
        foreach (var response in signItemtoken1)
        {
            string ComapnyName = response[/name/] != null ? (string)response[/name/] : //;
            string CompanyID = response[/id/] != null ? (string)response[/id/] : //;                                            
            if (ComapnyName == company_name)
            {
                Session[/BCCompanyName/] = CompanyName;
                Session[/BCCompanyId/] = CompanyID;
            }
        }                                            
    }
}

Response:
{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Access-Control-Allow-Headers: Origin, X-Requested-With, Authorization
  Access-Control-Allow-Origin: *
  Access-Control-Allow-Credentials: true
  ms-correlation-x: 516b7540-449c-2272-8895-d17e7e9fc0a7
  mise-correlation-id: 7d028162-108e-4ea6-b35c-eab9850c4561
  x-content-type-options: nosniff
  Strict-Transport-Security: max-age=31536000; includeSubDomains
  Access-Control-Expose-Headers: ms-correlation-x
  Date: Tue, 20 Feb 2024 11:27:16 GMT
  Server: Microsoft-HTTPAPI/2.0
  Content-Length: 79
  Content-Language: en-US
  Content-Type: application/json
}}


How to call an API to get company details or items from Dynamics 365 Business Central?
  • Suggested answer
    YUN ZHU Profile Picture
    YUN ZHU 75,848 Super User 2024 Season 2 on at
    Multi-tenant application for external tenants API to access Dynamics 365 Business Central company.
    Hi, are you able to Get to the data in the API in Postman? Using Postman you can verify that there is no problem with your OAuth settings.
    More details: 
    Using OAuth to connect Business Central APIs and Web Service in Postman
     
    Hope this helps.
    Thanks.
    ZHU
  • Suggested answer
    Nitin Verma Profile Picture
    Nitin Verma 21,081 Super User 2024 Season 1 on at
    Multi-tenant application for external tenants API to access Dynamics 365 Business Central company.
    Hi,
    have you added this app id in BC "Entra Application? and given consent?
     
     

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