How to update the fields like Epic Link or Label while creating an Issue via REST API?

[Venkat Mavillapalli]

I'm trying to create an issue and sending the following JSON

{

    "fields": {

       "project":

       {

          "key": "Key1"

       },

       "summary": "Test summary",

       "description": "Hello, this is DEC field",

       "issuetype": {

          "name": "Bug"

       },

       "customfield_10002": { "name": "Support" }

   }

}

But, I get the following error

{

    "errorMessages": [],

    "errors": {

        "customfield_10002": "Field 'customfield_10002' cannot be set. It is not on the appropriate screen, or unknown."

    }

}

First of all, is it possible to update the fields like Epic Link along with creating an issue? If yes, then what's wrong with the above request JSON?

[Kian Stack Mumo Systems · Accepted solution]

@Venkat Mavillapalli, 

Based on what you are showing, there are two issues I see:

1. The format of the Epic link is incorrect. When I get mine to create, I have to pass it the issue key as follows: "customfield_10014": "SSP-56"
2. The other issue is that it doesn't appear that the Epic Link field is visible on the screen for the project/issue type you are trying to create the issue as indicated by the error message you are receiving.

[Venkat Mavillapalli]

1. I didn't get how you suggest me to pass the data? Can you use my JSON as example and tell me please?

2. I could create an issue manually via web page and it does show me the Epic Link to select from the drop down on the same page

[Kian Stack Mumo Systems]

{

    "fields": {

       "project":

       {

          "key": "Key1"

       },

       "summary": "Test summary",

       "description": "Hello, this is DEC field",

       "issuetype": {

          "name": "Bug"

       },

       "customfield_10002": "<EPIC ISSUE KEY HERE>"

   }

}

If you can create an Issue with the Epic link, then your ID of customfield_10002 must be wrong. How did you get the ID?

Thanks,

Kian

[Venkat Mavillapalli]

You're right, the field ID was wrong. Now, I'm using the following URL to get the right ID.

Also, I should send the ID for the epic link.

Thanks for pointing me in the right direction

https://abc.atlassian.net/rest/api/latest/field