It is recommended to use webhooks to receive real-time notifications for events.Webhooks provide a way for your system to be notified in real time about events, such as payment success, refund, or subscription updates. Simply register a URL to receive HTTP POST requests containing event payloads.First of all, you need to set your sales webhook URL (key, value) in the sipay merchant panel at http://app.sipay.com.tr/merchant/apisetting. To get this feature, merchant must send the invoice with sale_web_hook_key when submitting the purchase request.This key is optional, but must be a valid key if submitted.
