DevelopersPayment GatewaySDK Callback Response

SDK Callback Response

When callback is a function name, the SDK calls it as callback(error, data).

Success

json

{
  "code": "00",
  "status": "success",
  "message": "Payment Successful",
  "merchant_reference": "ORDER-100001"
}

json

{
  "code": "E01",
  "status": "failed",
  "message": "Payment failed",
  "merchant_reference": "ORDER-100001"
}

json

{
  "code": "E02",
  "status": "canceled",
  "message": "Transaction Canceled",
  "merchant_reference": "ORDER-100001"
}

⚠️

If callback is a URL, the SDK redirects to that URL with query parameters. Always verify final status server-side after receiving the callback.