I am Getting 400 Bad Request when creating Epic Issue in Jira

[Hamed Deshmukh]

string JsonString = @"{
""fields"": {
""project"":
{
""key"": ""ABC""
},
""summary"": ""Summary"",

""description"":
{
""type"":""doc"",
""version"":1,
""content"":[
{
""type"":""paragraph"",
""content"":[
{
""type"":""text"",
""text"":""Description""
}
]
}
]
},
""customfield_10011"": ""XYZ"",
""issuetype"":
{
""name"": ""Epic""
}
}

string restUrl = String.Format("{0}rest/api/2/issue/", Url);
HttpWebResponse response = null;
HttpWebRequest request = WebRequest.Create(restUrl) as HttpWebRequest;
request.Method = "POST";
request.Accept = "application/json";
request.ContentType = "application/json";
request.Headers.Add("Authorization", "Basic " + EpicModel.GetEncodedCredentials(UserName, Password));
byte[] data = Encoding.UTF8.GetBytes(JsonString);
using (var requestStream = request.GetRequestStream())
{
requestStream.Write(data, 0, data.Length);
requestStream.Close();
}
using (response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode == HttpStatusCode.Created)
{
var reader = new StreamReader(response.GetResponseStream());
string str = reader.ReadToEnd();

//var jss = new System.Web.Script.Serialization.JavaScriptSerializer();
//var sData = jss.Deserialize<Dictionary<string, string>>(str);
//string issueKey = sData["key"].ToString();

}

}
request.Abort();

[Alessandro Lombardo]

I think that you miss the field "Epic Name" that maybe is mandatory to fill with a value