TM4J Updating a Test Plan results in Error Messages

[sthumulati]

My ProjectKey is DT and my Test Run Key is valid DT-C2. My entire console
is below. I checked everything. What am I doing wrong?

{
"projectKey" : "DT",
"name" : "Ashwin Thumulati",
"objective" : "Prototype",
"folder" : "/Prototype",
"status" : "Draft",
"owner" : "JIRAUSER10000",
"labels" : [ "A", "B", "C" ],
"issueLinks" : [ "DT-1" ],
"testRunKeys" : [ "DT-C2" ],
"customFields" : {
"ABC" : "DEF"
}
}
Request method: PUT
Request URI: http://localhost:8080/rest/atm/1.0/testplan/DT-P1
Proxy: <none>
Request params: <none>
Query params: <none>
Form params: <none>
Path params: <none>
Headers: Authorization=Basic c3RodW11bGF0aTpQb2x5IW1hdGg0MjA=
Accept=application/json, text/plain, */**
Accept-Encodng=gzip, deflate
Content-Type=application/json
Cookies: <none>
Multiparts: <none>
Body:
{
"projectKey": "DT",
"name": "Ashwin Thumulati",
"objective": "Prototype",
"folder": "/Prototype",
"status": "Draft",
"owner": "JIRAUSER10000",
"labels": [
"A",
"B",
"C"
],
"issueLinks": [
"DT-1"
],
"testRunKeys": [
"DT-C2"
],
"customFields": {
"ABC": "DEF"
}
}
400
{
"errorMessages": [
"The field projectKey is unrecognized. Allowed fields are: name, objective, folder, customFields, status, testRuns, issueLinks, labels, owner.",
"The field testRunKeys is unrecognized. Allowed fields are: name, objective, folder, customFields, status, testRuns, issueLinks, labels, owner."
]
}

Can you please look into this issue ASAP?