Cancel or record a refund for event registration

curl --request POST \
  --url https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason": "Guest cannot attend",
  "refund": false,
  "refund_amount": 25,
  "refund_reference": "refund-001"
}
'

import requests

url = "https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel"

payload = {
    "reason": "Guest cannot attend",
    "refund": False,
    "refund_amount": 25,
    "refund_reference": "refund-001"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    reason: 'Guest cannot attend',
    refund: false,
    refund_amount: 25,
    refund_reference: 'refund-001'
  })
};

fetch('https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'reason' => 'Guest cannot attend',
    'refund' => false,
    'refund_amount' => 25,
    'refund_reference' => 'refund-001'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel"

	payload := strings.NewReader("{\n  \"reason\": \"Guest cannot attend\",\n  \"refund\": false,\n  \"refund_amount\": 25,\n  \"refund_reference\": \"refund-001\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reason\": \"Guest cannot attend\",\n  \"refund\": false,\n  \"refund_amount\": 25,\n  \"refund_reference\": \"refund-001\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gratona.com/v1/admin/events/{eventId}/orders/{orderId}/cancel")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reason\": \"Guest cannot attend\",\n  \"refund\": false,\n  \"refund_amount\": 25,\n  \"refund_reference\": \"refund-001\"\n}"

response = http.request(request)
puts response.read_body

{
  "data": {
    "id": 42,
    "order_number": "EVT-42-001",
    "status": "completed",
    "payment_status": "paid",
    "payment_method": "Example",
    "payment_instructions": "Example",
    "gateway": "Example",
    "payment_intent_id": "Example",
    "subtotal_amount": 25,
    "discount_amount": 25,
    "donation_amount": 25,
    "fees_covered_amount": 25,
    "tax_deductible_amount": 25,
    "non_deductible_amount": 25,
    "total_amount": 25,
    "currency": "USD",
    "purchaser_name": "Example",
    "purchaser_email": "Example",
    "version": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "reservation_expires_at": "2026-10-20T12:00:00Z",
    "quote_fingerprint": "Example",
    "quote_snapshot": {
      "quote_fingerprint": "sha256:1792497900:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
      "expires_at": "2026-10-20T12:00:00Z",
      "currency": "USD",
      "availability": {
        "event_state": "open",
        "admissions_requested": 42,
        "admissions_remaining": 42
      },
      "lines": [
        {
          "source": "ticket",
          "source_id": 42,
          "label": "General admission",
          "units": 42,
          "admissions_per_unit": 42,
          "admissions": 42,
          "pre_reserved_units": 42,
          "unit_amount": "25.00",
          "fair_market_value": "25.00",
          "subtotal": "25.00",
          "discount": "25.00",
          "total": "25.00",
          "non_deductible": "25.00",
          "snapshot": {
            "name": "General admission",
            "code": "Example",
            "tier": "Example",
            "registration_group_kind": "individual",
            "group_label_prompt": "Example",
            "attendee_details_timing": "checkout",
            "admissions_per_unit": 42,
            "unit_amount": "25.00",
            "fair_market_value": "25.00"
          }
        }
      ],
      "promo_code_id": 42,
      "promo_code": "Example",
      "subtotal": "25.00",
      "discount": "25.00",
      "fee_coverage": "25.00",
      "donation": "25.00",
      "tax_deductible": "25.00",
      "non_deductible": "25.00",
      "total": "25.00",
      "attendee_slots": 42
    },
    "line_items": [
      {
        "type": "ticket",
        "label": "General admission",
        "ticket_type_id": 42,
        "sponsor_package_id": 42,
        "auction_item_id": 42,
        "auction_bid_id": 42,
        "quantity": 42,
        "unit_amount": 25,
        "line_total": 25,
        "fair_market_total": 25,
        "discount": 25,
        "admissions_per_unit": 42,
        "admissions": 42,
        "source_snapshot": {
          "name": "General admission",
          "code": "Example",
          "tier": "Example",
          "registration_group_kind": "individual",
          "group_label_prompt": "Example",
          "attendee_details_timing": "checkout",
          "admissions_per_unit": 42,
          "unit_amount": "25.00",
          "fair_market_value": "25.00"
        }
      }
    ],
    "metadata": {
      "registration_version": 42,
      "conversion_intents": {
        "recurring_gift": false,
        "child_sponsorship": false
      },
      "sponsorship_interest": {
        "program_id": 42,
        "recipient_id": 42,
        "recipient_label": "Alex",
        "url": "/frontend/view_entity/42/7/9"
      }
    },
    "receipt_snapshot": {
      "receipt_type": "event_combined_receipt",
      "event_id": 42,
      "event_name": "Annual Gala",
      "order_number": "EVT-42-001",
      "donation_id": 42,
      "currency": "USD",
      "subtotal_amount": 25,
      "discount_amount": 25,
      "fees_covered_amount": 25,
      "total_amount": 25,
      "tax_deductible_amount": 25,
      "non_deductible_amount": 25,
      "donation_amount": 25,
      "payment_method": "Example",
      "payment_status": "paid",
      "payment_instructions": "Example",
      "line_items": [
        {
          "type": "ticket",
          "label": "General admission",
          "ticket_type_id": 42,
          "sponsor_package_id": 42,
          "auction_item_id": 42,
          "auction_bid_id": 42,
          "quantity": 42,
          "unit_amount": 25,
          "line_total": 25,
          "fair_market_total": 25,
          "discount": 25,
          "admissions_per_unit": 42,
          "admissions": 42,
          "source_snapshot": {
            "name": "General admission",
            "code": "Example",
            "tier": "Example",
            "registration_group_kind": "individual",
            "group_label_prompt": "Example",
            "attendee_details_timing": "checkout",
            "admissions_per_unit": 42,
            "unit_amount": "25.00",
            "fair_market_value": "25.00"
          }
        }
      ],
      "issued_at": "2026-10-20T12:00:00Z",
      "receipt_note": "Ticket fair market value is separated from deductible event support.",
      "adjustment_type": "refund",
      "refunded_amount": 25,
      "active_total_amount": 25,
      "active_tax_deductible_amount": 25,
      "adjustment_reason": "Example",
      "adjusted_at": "2026-10-20T12:00:00Z"
    },
    "receipt_sent_at": "2026-10-20T12:00:00Z",
    "registration_questions": [
      {
        "field_key": "dietary",
        "field_label": "Dietary requirements",
        "field_type": "text",
        "options": [
          "Vegetarian"
        ],
        "scope": "buyer",
        "required": false,
        "id": 42,
        "help_text": "Example",
        "applies_to_ticket_type_ids": [
          42
        ]
      }
    ],
    "event": {
      "id": 42,
      "branding_program_id": 42,
      "name": "Annual Gala",
      "slug": "annual-gala",
      "starts_at": "2026-10-20T12:00:00Z",
      "timezone": "Africa/Kampala",
      "location": {
        "mode": "released_full",
        "label": "Kampala",
        "venue": "Example",
        "address": "Example",
        "map_allowed": false
      }
    },
    "registration_groups": [
      {
        "id": 42,
        "source_kind": "ticket",
        "source_id": 42,
        "event_ticket_type_id": 42,
        "kind": "individual",
        "label": "Example",
        "admissions_reserved": 42,
        "attendee_details_timing": "checkout",
        "status": "complete",
        "source_snapshot": {
          "name": "General admission",
          "code": "Example",
          "tier": "Example",
          "registration_group_kind": "individual",
          "group_label_prompt": "Example",
          "attendee_details_timing": "checkout",
          "admissions_per_unit": 42,
          "unit_amount": "25.00",
          "fair_market_value": "25.00"
        },
        "details_completed_at": "2026-10-20T12:00:00Z",
        "answers": [
          {
            "id": 42,
            "question_id": 42,
            "question": {
              "field_key": "dietary",
              "field_label": "Dietary requirements",
              "field_type": "text",
              "options": [
                "Vegetarian"
              ],
              "scope": "buyer",
              "required": false
            },
            "answer": "Vegetarian"
          }
        ],
        "attendee_ids": [
          42
        ]
      }
    ],
    "attendees": [
      {
        "id": 42,
        "event_registration_group_id": 42,
        "event_ticket_type_id": 42,
        "ticket_code": "EVT-42-00001",
        "name": "Jane Doe",
        "first_name": "Example",
        "last_name": "Example",
        "email": "Example",
        "ticket_type": "Example",
        "table": "Example",
        "status": "registered",
        "qr_token": "<string>",
        "details_completed_at": "2026-10-20T12:00:00Z",
        "qr_url": "Example",
        "wallet_pass_url": "Example",
        "wallet_pass_status": "inactive",
        "checked_in_at": "2026-10-20T12:00:00Z",
        "answers": [
          {
            "id": 42,
            "question_id": 42,
            "question": {
              "field_key": "dietary",
              "field_label": "Dietary requirements",
              "field_type": "text",
              "options": [
                "Vegetarian"
              ],
              "scope": "buyer",
              "required": false
            },
            "answer": "Vegetarian"
          }
        ],
        "metadata": {
          "source": "Example",
          "event_sponsor_id": 42,
          "sponsor_ticket_slot": 42
        }
      }
    ],
    "sponsors": [
      {
        "id": 42,
        "company_name": "Example",
        "contact_name": "Example",
        "contact_email": "Example",
        "contact_phone": "Example",
        "notes": "Example",
        "status": "active",
        "amount": 25,
        "fair_market_value": 25,
        "included_tickets_assigned": 42,
        "public_visibility": false,
        "renewal_follow_up_at": "2026-10-20T12:00:00Z",
        "logo_upload_id": 42,
        "logo_url": "Example",
        "package": {
          "id": 42,
          "name": "Example",
          "tier": "Example",
          "included_tickets": 42,
          "included_tables": 42
        },
        "deliverables": [
          {
            "id": 42,
            "type": "logo",
            "label": "Logo placement",
            "status": "pending",
            "due_at": "2026-10-20T12:00:00Z",
            "completed_at": "2026-10-20T12:00:00Z"
          }
        ]
      }
    ],
    "auction_items": [
      {
        "id": 42,
        "event_auction_item_id": 42,
        "name": "Example",
        "amount": 25,
        "quantity": 42,
        "status": "paid",
        "bidder_name": "Example",
        "bidder_email": "Example"
      }
    ],
    "payment_reconciliation_required": false,
    "payment_provider_status": "Example"
  }
}

{
  "message": "Something went wrong. Please try again.",
  "status": "error",
  "error": "invalid_request",
  "code": "DONOR_NOT_FOUND"
}

{
  "message": "Something went wrong. Please try again.",
  "status": "error",
  "error": "invalid_request",
  "code": "DONOR_NOT_FOUND"
}

{
  "message": "Not Found",
  "status": "error"
}

{
  "errors": {},
  "status": "error",
  "message": "The given data was invalid."
}