Jira endpoint response 400

[Reshmi Jana]

Endpoint - https://tuftandneedle-sandbox-280.atlassian.net/rest/api/3/issue 
Connector between ServiceNow to Jira and I am getting a 400. Whenever we try to post data to service now to Jira I am getting a 400.  Although the response is working in Postman. The auth is Basic auth and everything else is working fine there. There are no specific details. 
Payload : 

{

            "fields": {
                "issuetype": {
                    "name": "Story"},
                "project": {
                    "key": "ESI"
                },
                "summary": "testing from postman123",
                "description": {
                    "version": 1,
                    "type": "doc",
                    "content": [
                        {
                            "type": "paragraph",
                            "content": [
                                {
                                    "type": "text",
                                    "text":"testing from postman123"
                                }
                            ]
                        }
                    ]
                }
            }
        }

[Marc - Devoteam]

Hi @Reshmi Jana 

Welcome to the community.

I suspect you want to create an issue in Jira, correct?

The 1st issue I see is this:

fields": {
"issuetype": {
"name": "Story"},
"project": {
"key": "ESI"

this needs to be:

fields": {
"issuetype": {
 ":id": "<id of issue type story, not the name>" },
"project": {
"id": "<id of the project not the name or key>" },

See also Jira API do, api-rest-api-3-issue-post 

[Florian Bonniec]

Hi @Reshmi Jana 

What is the error response you get with the error code 400 ?

Regards