My request-type template has the below fields (summary is a normal field others are from a form template.) - Refer the SS
But when I use the APIs " {{baseurl}}/rest/servicedeskapi/servicedesk/1/requesttype/9/field?expand=[hiddenFields]" which gives me only "summary" in the response.

The API {{baseurl}}/rest/servicedeskapi/servicedesk/1/requesttype/9/field?expand=[hiddenFields]" response
{
"requestTypeFields": [
{
"fieldId": "summary",
"name": "Summary",
"description": "",
"required": true,
"defaultValues": [],
"validValues": [],
"jiraSchema": {
"type": "string",
"system": "summary"
},
"visible": true
}
],
"canRaiseOnBehalfOf": true,
"canAddRequestParticipants": true
}
How can I get all fields including forms in the request type get api? and How can I update them?