Fund Transfer Callbacks

FastFlowPe sends real-time PayOut transaction status updates to a webhook endpoint of your choosing. Whenever a PayOut disbursement reaches a terminal state, FastFlowPe automatically POSTs a JSON payload to your pre-configured HTTPS URL, so your system stays in sync without polling.

Quick ReferenceProtocol: HTTPS only (HTTP endpoints are rejected)Method: POST with JSON bodyEvent: PayOut transaction status changeSetup path: Merchant Dashboard, Settings, Webhooks, Debit - PayOut, UpdateActivation: 2 to 3 minutes after saving

How to Configure Your PayOut Callback URL

Register your PayOut webhook URL in the merchant dashboard before FastFlowPe can deliver PayOut callbacks to your server.

Navigate to https://go.fastflowpe.com/ and sign in with your merchant credentials.

Open Webhook Settings

From the left sidebar, click Settings, then select the Webhooks tab.

Enter your PayOut callback URL

Under Debit - PayOut, enter your HTTPS endpoint URL where you want FastFlowPe to deliver PayOut transaction callbacks.

Save the configuration

Click Update under Debit - PayOut to save your URL. Full path: Login → Settings → Webhooks → Debit - PayOut → Update.

Only HTTPS-enabled webhook URLs are accepted. HTTP endpoints will be rejected and will not receive any callbacks.

Allow 2 to 3 minutes after saving your callback URL for the configuration to take effect. The next PayOut event after that window will be delivered to your endpoint.

PayOut Callback Payload

FastFlowPe uses a POST request with a JSON body for all PayOut callbacks.

PayOut Callback

{
  "transaction": {
    "id": "<transaction UUID>",
    "amount": "500.00",
    "payment_type": "IMPS",
    "utr": "92834823745",
    "status": "SUCCESS",
    "beneficiary_details": {
      "beneficiary_ifsc": "ICIC0009999",
      "beneficiary_name": "John Doe",
      "beneficiary_email": "john@example.com",
      "beneficiary_mobile": "9999999999",
      "beneficiary_acc_number": "109909023553"
    },
    "merchant_ref_id": "TRX_2020202"
  }
}

PayOut Payload Fields

string

The unique UUID of the PayOut transaction.

string

The disbursement amount as a decimal string.

string

The transfer mode used (e.g., IMPS, NEFT, RTGS).

string

The Unique Transaction Reference confirming the bank transfer. null on failure.

string

The final transaction status. Either SUCCESS or FAILED.

object

Show beneficiary_details fields

string

The IFSC code of the beneficiary’s bank branch.

string

The full name of the beneficiary account holder.

string

The email address of the beneficiary.

string

The mobile number of the beneficiary.

string

The bank account number of the beneficiary.

string

Your internal reference ID submitted with the PayOut request.

In production, rely on callbacks rather than polling the Payout Status endpoint. Webhooks reduce latency, cut down on unnecessary API calls, and ensure your system reacts to transaction outcomes in real time.

Configuring PayIn callbacks? See PayIn Callbacks.

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How to Configure Your PayOut Callback URL

PayOut Callback Payload

PayOut Payload Fields

​How to Configure Your PayOut Callback URL

​PayOut Callback Payload

​PayOut Payload Fields

How to Configure Your PayOut Callback URL

PayOut Callback Payload

PayOut Payload Fields