Unable to set assignee through JIRA REST API

[Shivkumar.Amuda]

Unable to set assignee through JIRA REST API .NET SDK.

[Madhura Lodam]

Not able to set assignee using POST /issue REST call.
sample input:

{

    "fields": {

        "project": {

            "id": "102XX"

        },

        "summary": "Creating this issue as part of JIRA REST Testing",

        "issuetype": {

            "id": "10003"

        },

        "assignee": {

            "name": "emailOfAssignee"

        },

        "timetracking": {

            "originalEstimate": "10",

            "remainingEstimate": "5"

        },

        "description": "testing Jira Rest endpoints",

        "duedate": "2023-09-27"

    }

} 

The issue gets created unassigned.
Can you please suggest how can I set the assignee? 

[Ravi Sagar _Sparxsys_]

What is the error? What is in your JSON body for the REST call?

[Shivkumar.Amuda]

Im creating an issue with Atlassian.JIRA SDK.

while assigning the assign with accountID the jira ticket assignee field is not getting updated to the issue. please find the below sample code.

Eg : Sample code:

Issue issue = jira.Issues.GetIssueAsync("TID").Result;
issue .Assignee = "accountid-XXXXX" ;
issue .AssignAsync( "accountid-XXXXX");
Issue issue1 = issue .SaveChangesAsync().Result;

The above code is NOT updating the issue assignee.