Update custom field (Assignee Group) value using REST API..

[Deleted user]

Hi All,

We have a field "Assignee Group" has few options (Development, UAT,etc..)

This is a dropdown field and am trying to update this field using issue transition.

using this rest url :

https://abc.atlassian.net/rest/api/3/issue/{issue key}/transitions?expand=transitions.fields

pls find the below json for the same.

{
"update": {
},
"fields": {
"customfield_ID": { "value": "UAT" }
},
"transition": {
"id": "201"
}
}

But i am unable to update it and giving "The remote server returned an error: (400) Bad Request."

Can anyone give me some idea , what i am doing wrong in above ... 

And also pls guide me - can we do update custom field through issue transitions?

If not what is the possible options to update the custom field to Jira.

Thanks

Vishnu

[DPKJ]

@[deleted]  Can you please share full command with headers. CURL will also work.

It seems error is related with 'Accept' and 'Content-Type' headers, value of those should be 'application/json'

[Deleted user]

Thanks for your reply. I am using C# .Net programming as mentioned below.

var req = HttpWebRequest)WebRequest.Create("https://abc.atlassian.net/rest/api/3/issue/{IssueKey}/transitions?expand=transitions.fields");

var authInfo = "JiraUName:APIToken";

authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));

req.Headers["Authorization"] = "Basic " + authInfo;

req.Method = "POST";

req.ContentType = "application/json";

var requestStream = req.GetRequestStream();

var encoding = new ASCIIEncoding();

int transitionID = 201;

string fileContent = File.ReadAllText(@"C:\JIRARESTAPIJSON\Working_JSON_JIRA\IssueTransition_AGroup.json");
fileContent = fileContent.Replace("{0}", transitionID.ToString());

fileContent = fileContent.Replace("{1}", "Fixed");

JObject json = JObject.Parse(fileContent);

var serialized = JsonConvert.SerializeObject(json);

var buffer = encoding.GetBytes(serialized);

requestStream.Write(buffer, 0, buffer.Length);

requestStream.Flush();

requestStream.Close();

HttpWebResponse response = req.GetResponse() as HttpWebResponse;

[DPKJ]

Let me validate this on my site and get back to you.