Notification Content Extension is not appearing for multiple category name?

I have added Custom Remote Notification Content Extension to my project and added multiple Extension categories into the Notification Content Extension target info.plist file like the following:

added different types of notification action categories for different notifications into the AppDelegate:

 func addRichRotificationActions() {
        let confirmAction = UNNotificationAction(identifier: "ConfirmAction", title: "Confirm", options: [.foreground])
        let cancelAction = UNNotificationAction(identifier: "CancelAction", title: "Cancel", options: [.destructive])
        let closeAction = UNNotificationAction(identifier: "CloseAction", title: "Close", options: [.foreground])

        let openTicketCategory = UNNotificationCategory(identifier: "OpenTicket", actions: [confirmAction, cancelAction], intentIdentifiers: [], options: [])
        let confirmTicketCategory = UNNotificationCategory(identifier: "ConfirmTicket", actions: [closeAction, cancelAction], intentIdentifiers: [], options: [])
        let closeTicketCategory = UNNotificationCategory(identifier: "CloseTicket", actions: [], intentIdentifiers: [], options: [])
        let cancelTicketCategory = UNNotificationCategory(identifier: "CancelTicket", actions: [], intentIdentifiers: [], options: [])

        UNUserNotificationCenter.current().setNotificationCategories([openTicketCategory, confirmTicketCategory, closeTicketCategory, cancelTicketCategory])
    }

Now I am sending the apns json following way:

For Open tickets getting category name as "OpenTicket":

[AnyHashable("default"): You have a new ticket, AnyHashable("aps"): {
    alert = "#8556 - New Booking for Mr. Tomas";
    badge = 1;
    category = OpenTicket;
    "mutable-content" = 1;
    sound = default;
}]

For Confirm tickets getting category name as "ConfirmTicket":

[AnyHashable("default"): You have a confirmed ticket, AnyHashable("aps"): {
    alert = "#8556 - Ticket Confirmed for Mr. Tomas";
    badge = 1;
    category = ConfirmTicket;
    "mutable-content" = 1;
    sound = default;
}]

and so on.

But unfortunately, I am receiving the default notification with different action buttons rather than the custom notification content extension with different actions. I can't able to figure out the problem. How is it possible to get notification content extension with different actions for remote notification?

Just need to make the UNNotificationExtensionCategory as an Array rather than String in the info.plist of Notification Content Extension target.