How to send reply in Tickets as Contact via Channel Phone?

How to send reply in Tickets as Contact via Channel Phone?

Hi Everyone,

I created a ticket via PHONE Channel, when I reply the ticket with phone channel it gives me an authorization error while I already set the API for access and refresh token.

send like this with POST method
{
  "channel" : "PHONE",
  "content" : "Reply in a ticket",
}

Also, when I list the channels from an API, its show the accepts replies is false on phone channel, i.e

https://desk.zoho.com/api/v1/channels
 {
            "code": "PHONE",
            "externalId": null,
            "appName": null,
            "acceptsReplies": false,
            "replyConfig": null,
            "photoURL": null,
            "name": "Phone",
            "type": "SYSTEM",
            "departmentId": null
        }