How to process a refund in a payment app without order ID?

Technical Q&A
1

Hello,

Im working on a payment app. I have an issue with payment refund.

The payload that shopify app provides, do not have orderid.

{
  "id": "2sl4WR9jF82W0vQVg8fjux9S",
  "gid": "gid://shopify/RefundSession/2sl4WR9jF82W0vQVg8fjux9S",
  "payment_id": "e6dXWOq7-_NSjXFeCjQ9jsGZ",
  "amount": "123.00",
  "currency": "CAD",
  "test": false,
  "merchant_locale": "en",
  "proposed_at": "2020-07-13T00:00:00Z"
}

Is there a way to get order details from this. I need order id to initiate refund from portal.

When order is created then we only have a unique payment id reference stored.
is payment_id is same payment reference that is created while creating an order?

How to get order detail based on payment_id?
Please help or point to any guide documentation.

Thanks