[Solved] ASP.Net Web API: HttpClient 400 Bad Request in IIS

I am posting data and files from HttpClient, it working properly when i used localhost url of the Web API, but it is returning 400 when i use hosted url.

public IActionResult AddABCDocument([FromForm] long DocumentTypeID, string DocumentName, string FileName, string DocumentNumber, long StateID, string IssueDate, string ExpirationDate, List<IFormFile>? Files)
{     
    if (ModelState.IsValid)
    {           
        managedmodel modeldoc = new managedmodel ();
        modeldoc.UserID = Convert.ToString(TempData["ProviderId"]).ToUpper();
        modeldoc.DocumentTypeID = DocumentTypeID;
        modeldoc.DocumentName = DocumentName;
        modeldoc.DocumentNumber = DocumentNumber;
        modeldoc.StateID = StateID;
        modeldoc.IssueDate = dtstartdate;
        modeldoc.ExpirationDate = dteradate;
        modeldoc.Files = Files;
        modeldoc.FileName = FileName;
 
        HttpClient client = new HttpClient();           
        client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", HttpContext.Request.Cookies["Token"].ToString());
        byte[] data;
        
        foreach (var file in Files)
        {
            if (file.Length > 0)
            {
                using (var ms = new MemoryStream())
                {
                    file.CopyTo(ms);
                    data = ms.ToArray();
                    ByteArrayContent bytes = new ByteArrayContent(data);
                    MultipartFormDataContent multiContent = new MultipartFormDataContent();
                    multiContent.Add(bytes, "Files", modeldoc.FileName);
                    multiContent.Add(new StringContent(modeldoc.DocumentTypeID.ToString()), "DocumentTypeID");
                    multiContent.Add(new StringContent(modeldoc.DocumentName.ToString()), "DocumentName");
                    multiContent.Add(new StringContent(modeldoc.DocumentNumber.ToString()), "DocumentNumber");
                    multiContent.Add(new StringContent(modeldoc.StateID.ToString()), "StateID");
                    multiContent.Add(new StringContent(modeldoc.ExpirationDate.ToString()), "ExpirationDate");
                    multiContent.Add(new StringContent(modeldoc.IssueDate.ToString()), "IssueDate");
                    multiContent.Add(new StringContent(modeldoc.UserID.ToString()), "UserID");
                    var Response = client.PostAsync(new Uri("http://localhost:5179/api/abc/docadd"), multiContent).Result;(working) 
                    var Response = client.PostAsync(new Uri("http://9.9.82.188:3033/api/abc/docadd"), multiContent).Result;(not working)                     
                }
            }
        }
        
        //return Json(Response.message);
        if (Response.StatusCode==200)
        {
            TempData["ProviderId"] = modeldoc.UserID;
            return Json(Response.StatusCode); 
        }
        else
        {
            ModelState.AddModelError("CustomError", Response.ToString());
            return Json(Response);
        } 
    }
    else
    {
        return View();
    }
}