Php curl Jira issue creation not working with custom field - php

Question

All , I am using PHP to create jira issues , below code is working fine , only issue if I sends custom fields value it sending error. please let me know if I am doing it in wrong way.
function createJiraServiceDeskRequestWithAttachment($serviceDeskId,$requestTypeId,$summary,$description = '', array $files = [],
$url,$user, $token, $primaryCustomerRepId=10202, $isAttachmentPublic = true
): array {
$returnValue = ['ticket' => [], 'temporaryAttachmentIds' => [], 'attachments' => [], 'error' => null];
// make sure to remove additional forward slashes /
$url = rtrim($url, '/');
$endPoint = $url . '/rest/servicedeskapi/request';
$data = [
"serviceDeskId" => $serviceDeskId,
"requestTypeId" => $requestTypeId,
"requestFieldValues" => [
"summary" => $summary,
"description" => $description,
// "customfield_10100" => $primaryCustomerRepId
],
];
try {
$ch = curl_init($endPoint);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
$jsonData = json_encode($data);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);
curl_setopt($ch, CURLOPT_USERPWD, $user . ":" . $token);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
$issueResult = curl_exec($ch);
$issueResult = json_decode($issueResult, true);
if (curl_errno($ch) || empty($issueResult))
return $returnValue;
curl_close($ch);
$returnValue['ticket'] = $issueResult;
// here add temporary attachment
if (! empty ($files)):
$uploadedAttachments = [];
$endPoint = $url . "/rest/servicedeskapi/servicedesk/{$serviceDeskId}/attachTemporaryFile";
foreach ($files as $index => $file) {
$ch = curl_init($endPoint);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, ['file' => curl_file_create(
realpath($file),
mime_content_type($file),
basename($file)
)]);
curl_setopt($ch, CURLOPT_USERPWD, $user . ":" . $token);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: multipart/form-data', 'X-Atlassian-Token: no-check']);
$tmpResult = curl_exec($ch);
if (! curl_errno($ch) && ! empty($tmpResult = json_decode($tmpResult, true))) {
if (isset($tmpResult['temporaryAttachments']) && isset($tmpResult['temporaryAttachments'][0]['temporaryAttachmentId']))
$uploadedAttachments[] = $tmpResult['temporaryAttachments'][0]['temporaryAttachmentId'];
}
curl_close($ch);
}
else:
return $returnValue;
endif;
// check if there are temporary attachments uploaded, then link them with the request
if (! empty($uploadedAttachments)):
$returnValue['temporaryAttachmentIds'] = $uploadedAttachments;
$endPoint = $url . "/rest/servicedeskapi/request/{$issueResult['issueId']}/attachment";
$ch = curl_init($endPoint);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
$jsonData = json_encode(["temporaryAttachmentIds" => $uploadedAttachments, 'public' => $isAttachmentPublic]);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);
curl_setopt($ch, CURLOPT_USERPWD, $user . ":" . $token);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
$attachresult = curl_exec($ch);
$attachresult = json_decode($attachresult, true);
if (! curl_errno($ch) && ! empty($attachresult))
$returnValue['attachments'] = $attachresult;
curl_close($ch);
return $returnValue;
else:
return $returnValue;
endif;
} catch (\Exception $e) {
$returnValue['error'] = $e->getMessage();
return $returnValue;
}
}
If I uncomment this code customfield_10100, it doesn't work
I also tried to place it outside of requested values array
"fields" =>[
"customfield_10100" => $primaryCustomerRepId
]