Payment / Alternative payment methods / Africa / USSD

H2H#

POST https://payments.apipro.io/v2/payment

ApiPro provides two options for processing USSD payments: a server-to-server (H2H) integration and a redirection to a hosted payment page (HPP). This documentation describes the H2H integration.

When creating a payment, you must set method = ussd in your request body.

Initial Success Response (200 OK)#

After a successful request, you should first inspect the error_code field. If it is not 0, the transaction has failed.

If there are no errors, inspect the status field.

If the status is success, the payment has been completed successfully.
If the status is pending, inspect the challenge object to determine the next step.

The `ussd` Payment Flow#

For the USSD payment method, the API returns a challenge_type of ussd while the payment remains pending.

Example of a 'redirect' challenge response:

{
  "error_code": 0,
  "error_reason": "",
  "identifier": "PM00000000CML8A",
  "request_id": "65578e53-ee92-47f4-9202-c4c5c9572449",
  "reference": "AfricaUssdH2H#1",
  "status": "pending",
  "type": "payment",
  "method": "ussd",
  "mode": "initial",
  "currency": "NGN",
  "amount": "25.01",
  "challenge": {
    "type": "ussd",
    "ussd": {
      "code": "97852456#"
    }
  },
  "timestamp": "2024-04-01T18:08:24Z"
}

Process Overview:

If the response contains: challenge.challenge_type = "ussd" display the USSD code from: challenge.ussd.code to the customer. The customer must dial the displayed USSD code on their mobile phone and complete the payment by following the instructions provided by their mobile banking application or mobile network operator.

Once the customer authorizes the payment, ApiPro receives confirmation from the payment provider and sends the final transaction status asynchronously to the merchant's callback_url.

Transaction Status#

While the customer is completing the payment, the transaction remains in the pending state.

If the final status is not yet available, the merchant may either:

wait for the callback notification; or
perform a payment status check using the Check Payment endpoint.

Important Notes#

The USSD code should be clearly displayed to the customer and should be easy to copy or manually dial.
The payment is completed entirely on the customer's mobile device using their mobile banking or USSD interface.
The final transaction status is delivered asynchronously via the configured callback_url.
If the initial payment request returns a timeout (HTTP 504), the transaction may still be processing. Wait for the callback or perform a status check before treating the payment as failed.

Headers#

Header	Value
`Content-Type`	`application/json`
`Authorization`	`{{authorization}}`
`Digest`	`{{digest}}`
`Host`	`{{host}}`
`Date`	`{{date}}`

See Authentication & Signature for how to build the signed headers.

Request body#

Annotations in the example are the field requirements: required, optional or conditional. Comments are stripped automatically by the Postman collection before signing; remove them in your own requests.

{
    "method": "ussd", // required, snake_case / lower case only: "ussd" (not "USSD" or "Ussd")
    "mode": "initial", // required
    "reference": "USSDPaymentH2H#1", // required
    "currency": "NGN", // required
    "amount": 25, // required
    "description": "My order", // optional
    "channel_code": "044", // required
    "customer": { // optional
        "identifier": "12345", // required, may be used any unique value from system of merchant
        "email": "user@example.com", // optional
        "first_name": "Darth", // optional
        "last_name": "Vader", // optional
        "middle_name": "Skywalker", // optional
        "phone": "2348035776359", // optional
        "itn": "X1234567890", // optional
        "country": "NG", // optional, ISO 3166-1
        "state_code": "LA", // optional, ISO 3166-2
        "city": "Lagos", // optional
        "address": "Thomas Animashaun Street, 2", // optional
        "zip_code": "100213", // optional
        "birthday": "2006-01-02", // optional
        "ip": "192.168.0.1", // optional
        "gender": "male" // optional
    },
    "redirect_url": "https://merchant.domain/customer_pending_page", // required
    "callback_url": "https://merchant.domain/callback", // required
    "extra": { // optional, any field which may be needed for transaction routing and integration
        "meta": {
            "key": "value"
        }
    }
}

Fields#

Field	Type	Requirement / note
`method`	string	required, snake_case / lower case only: "ussd" (not "USSD" or "Ussd")
`mode`	string	required
`reference`	string	required
`currency`	string	required
`amount`	integer	required
`description`	string	optional
`channel_code`	string	required
`customer`	object	optional
`customer.identifier`	string	required, may be used any unique value from system of merchant
`customer.email`	string	optional
`customer.first_name`	string	optional
`customer.last_name`	string	optional
`customer.middle_name`	string	optional
`customer.phone`	string	optional
`customer.itn`	string	optional
`customer.country`	string	optional, ISO 3166-1
`customer.state_code`	string	optional, ISO 3166-2
`customer.city`	string	optional
`customer.address`	string	optional
`customer.zip_code`	string	optional
`customer.birthday`	string	optional
`customer.ip`	string	optional
`customer.gender`	string	optional
`redirect_url`	string	required
`callback_url`	string	required
`extra`	object	optional, any field which may be needed for transaction routing and integration
`extra.meta`	object
`extra.meta.key`	string

Responses#

ResponsesCallback

Response Examples

HTTP 200 (58)HTTP 401 (15)

Merchant not found

{
  "error_code": 35,
  "error_reason": "Merchant not found",
  "description": "The requested resource is undefined",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:01:00.00Z"
}

Required fields are missing: method or widget.method, reference

{
  "error_code": 31,
  "error_reason": "Required fields are missing: method or widget.method, reference",
  "timestamp": "2025-10-26T14:03:00.00Z"
}

Using 'method' and 'widget.method' at the same time.

{
  "error_code": 30,
  "error_reason": "Invalid params",
  "description": "Widget and method cannot be used together",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:04:00.00Z"
}

Card can only be used with specific methods. Check documentation

{
  "error_code": 30,
  "error_reason": "Invalid params",
  "description": "Card can only be used with specific methods. Check documentation",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:05:00.00Z"
}

Customer is blocked

{
  "error_code": 451,
  "error_reason": "General risk decline",
  "description": "Customer is blocked",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:06:00.00Z"
}

Customer is blocked for all merchant projects

{
  "error_code": 451,
  "error_reason": "General risk decline",
  "description": "Customer is blocked for all merchant projects",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:02.00Z"
}

Customer is blocked for the specified project

{
  "error_code": 451,
  "error_reason": "General risk decline",
  "description": "Customer is blocked for the specified project",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:04.00Z"
}

Customer is blocked system-wide

{
  "error_code": 451,
  "error_reason": "General risk decline",
  "description": "Customer is blocked system-wide",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:06.00Z"
}

Customer is globally locked

{
  "error_code": 451,
  "error_reason": "General risk decline",
  "description": "Customer is globally locked",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:08.00Z"
}

Timeout while requesting routing

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Routing request timeout",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:01.00Z"
}

Payment transaction timeout after some time

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Payment transaction timeout after 30 seconds",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:03.00Z"
}

Unknown routing error

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Unknown routing error",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:02.00Z"
}

Payment transaction was cancelled

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Payment transaction was cancelled",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:04.00Z"
}

Internal error: Data is empty

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Internal error: Value cannot be null. (Parameter 'data')",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:05.00Z"
}

Endpoint type wasn't found

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Internal error: Endpoint type cannot be null or empty (Parameter 'endpointType')",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:06.00Z"
}

Mid configuration error

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Internal error: Mid [Mid ID] no longer exists in configuration",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:07.00Z"
}

Routing service error: Converting data error

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Routing service error: The JSON value could not be converted to System.Guid.",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:08.00Z"
}

Routing service error

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Routing service error",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:08.00Z"
}

Broker transport failure

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Internal error: Broker transport failure",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:09.00Z"
}

Internal error

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "Internal error",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:09.00Z"
}

An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank

{
  "error_code": 121,
  "error_reason": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "description": "An issue has been detected in the routing settings. For instance, it could be due to a disabled project or bank",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:08:10.00Z"
}

An unexpected error occurred while processing the request

{
  "error_code": 200,
  "error_reason": "Transaction processing error",
  "description": "An unexpected error occurred while processing the request",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:09:00.00Z"
}

Invalid method challenge configuration. Settings not found.

{
  "error_code": 121,
  "error_reason": "Invalid method challenge configuration. Please reconfigure method challenge type settings",
  "description": "Invalid method challenge configuration. Settings not found.",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:10:00.00Z"
}

Route is invalid (Incorrect method, mid settings)

{
  "error_code": 121,
  "error_reason": "Route is invalid",
  "description": "There is more than one challenge setting for a method. Please reconfigure method challenge type settings.",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:11:00.00Z"
}

Getting currency rate info error.

{
  "error_code": 200,
  "error_reason": "While getting currency rate, error happend",
  "description": "An internal error occurred while processing currency information",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:12:00.00Z"
}

Error processing currency information.

{
  "error_code": 200,
  "error_reason": "Error with payment configurations",
  "description": "An internal error occurred while processing currency information",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:13:00.00Z"
}

Error with wallet

{
  "error_code": 200,
  "error_reason": "Error with wallet",
  "description": "An internal error occurred while processing currency information",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:14:00.00Z"
}

Failed to register transaction

{
  "error_code": 200,
  "error_reason": "Failed to register transaction",
  "description": "An internal error occurred while processing currency information",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:15:00.00Z"
}

Failed saving card info

{
  "error_code": 200,
  "error_reason": "Transaction processing error",
  "description": "Failed to save card information",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:16:00.00Z"
}

Transaction processing error

{
  "error_code": 200,
  "error_reason": "Transaction processing error",
  "description": "Failed to register the transaction",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:17:00.00Z"
}

Mid doesn't support challenge type for method (mid or method settings problem)

{
  "error_code": 121,
  "error_reason": "Route is invalid",
  "description": "Mid does not support challenge type [challengeType] for method [method]",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:18:00.00Z"
}

Mid is disabled

{
  "error_code": 121,
  "error_reason": "Route is invalid",
  "description": "Mid is disabled",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:19:00.00Z"
}

Bank doesn't support currency

{
  "error_code": 1051,
  "error_reason": "Bank doesn't support currency",
  "description": "Blocked routing for transaction: Invalid currency",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:20:00.00Z"
}

Bank doesn't support payment method

{
  "error_code": 1054,
  "error_reason": "Bank doesn't support payment method",
  "description": "Blocked routing for transaction: Invalid method: [method]",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:21:00.00Z"
}

Bank does not support transaction: Invalid payment type

{
  "error_code": 1050,
  "error_reason": "Bank does not support transaction",
  "description": "Blocked routing for transaction: Invalid payment type",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:22:00.00Z"
}

Mid request timeout

{
  "error_code": 200,
  "error_reason": "Mid request timeout",
  "request_id": null,
  "reference": "YOUR_REFERENCE",
  "timestamp": "2025-10-26T14:24:00.00Z"
}

Communication error

{
  "error_code": 200,
  "error_reason": "Communication error",
  "request_id": "[UUID_ТРАНЗАКЦІЇ]",
  "reference": "YOUR_REFERENCE",
  "timestamp": "2025-10-26T14:25:00.00Z"
}

Forbidden

{
  "error_code": 5,
  "error_reason": "Forbidden",
  "timestamp": "2025-10-26T14:33:00.00Z"
}

Some unexpected message

{
  "error_code": 5,
  "error_reason": "[Some unexpected message]",
  "timestamp": "2025-10-26T14:33:00.00Z"
}

Failed to register card transaction

{
  "error_code": 200,
  "error_reason": "Failed to register card transaction",
  "request_id": null,
  "reference": "YOUR_REFERENCE",
  "timestamp": "2025-10-26T14:34:00.00Z"
}

Failed to register cascade transaction

{
  "error_code": 200,
  "error_reason": "Failed to register cascade transaction",
  "request_id": null,
  "reference": "YOUR_REFERENCE",
  "timestamp": "2025-10-26T14:35:00.00Z"
}

Endpoint type cannot be null or empty

{
  "error_code": 200,
  "error_reason": "Endpoint type cannot be null or empty",
  "request_id": null,
  "reference": "YOUR_REFERENCE",
  "timestamp": "2025-10-26T14:36:00.00Z"
}

Data is empty

{
  "error_code": 200,
  "error_reason": "Value cannot be null. (Parameter 'data')",
  "request_id": null,
  "reference": "YOUR_REFERENCE",
  "timestamp": "2025-10-26T14:36:00.00Z"
}

An unexpected internal error occured

{
  "error_code": 200,
  "error_reason": "Transaction processing error",
  "description": "An unexpected internal error occurred",
  "request_id": "YOUR_REFERENCE",
  "status": "error",
  "timestamp": "2025-10-26T14:38:00.00Z"
}

Handler returned null response

{
  "error_code": 210,
  "error_reason": "Handler returned null response",
  "description": "Handler returned null response",
  "request_id": "your_transaction_reference",
  "status": "error",
  "timestamp": "2025-10-26T12:02:00.000Z"
}

Rate limit exceeded

{
  "error_code": 210,
  "error_reason": "Rate limit exceeded",
  "description": "Rate limit exceeded",
  "request_id": "your_transaction_reference",
  "status": "error",
  "timestamp": "2025-10-26T12:01:00.000Z"
}

Access denied: Invalid or missing access token

{
  "error_code": 210,
  "error_reason": "Access denied: Invalid or missing access token",
  "description": "Access denied: Invalid or missing access token",
  "request_id": "your_transaction_reference",
  "status": "error",
  "timestamp": "2025-10-26T12:00:00.000Z"
}

Request cannot be null

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Request cannot be null",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Flow cache limit exceeded

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Flow cache limit exceeded",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Flow configuration not found for project: {projectId}

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Flow configuration not found for project: {projectId}",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Invalid flow configuration

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Invalid flow configuration",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Flow execution failed

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Flow execution failed:",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Circular reference detected at node: {NodeIdentifier}

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Circular reference detected at node: {NodeIdentifier}",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Node not found: {NodeIdentifier}

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Node not found: {NodeIdentifier}",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Flow execution limit exceeded

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Flow execution limit exceeded",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Flow ended without result

{
  "code": 0,
  "reason": "",
  "error_code": 1,
  "error_reason": "Flow ended without result",
  "request_id": "",
  "reference": "",
  "status": "error",
  "timestamp": "2025-09-29T11:52:39.25Z",
  "description": ""
}

Duplicated reference

{
  "error_code": 108,
  "error_reason": "Duplicated reference",
  "request_id": "3829f5bd-6dcb-41f9-a4ba-3ff8b65a3cfc",
  "reference": "",
  "timestamp": "2025-11-10T08:47:22.81Z"
}

Successful transaction

{
  "identifier": "P2C000000381",
  "request_id": "fcd9927b-0528-4568-b29c-63d89e7f50c6",
  "reference": "PaymentOrder#001",
  "description": "Payment order",
  "status": {
    "name": "created",
    "date": "2025-06-06T15:43:37.4530503Z"
  },
  "created_date": "2025-06-06T15:43:30.387",
  "amount": 2000,
  "billing_amount": 2000,
  "currency": "NGN",
  "challenge": {
    "type": "ussd",
    "ussd": {
      "code": "97852456#"
    }
  },
  "timestamp": "2025-06-06T15:43:37.7864915Z",
  "error_code": 0,
  "error_message": ""
}

Missing Authorization header

{
  "error_code": 31,
  "error_reason": "Missing Authorization header",
  "timestamp": "2025-10-26T16:01:00.00Z"
}

Invalid Authorization header format

{
  "error_code": 31,
  "error_reason": "Invalid authorization header format",
  "timestamp": "2025-10-26T16:03:00.00Z"
}

Invalid signature format

{
  "error_code": 31,
  "error_reason": "Invalid signature format",
  "timestamp": "2025-10-26T16:03:00.00Z"
}

Unsupported algorithm

{
  "error_code": 31,
  "error_reason": "Unsupported algorithm",
  "timestamp": "2025-10-26T16:04:00.00Z"
}

Invalid API key

{
  "error_code": 31,
  "error_reason": "Invalid API key",
  "timestamp": "2025-10-26T16:05:00.00Z"
}

Missing Date header

{
  "error_code": 31,
  "error_reason": "Missing Date header",
  "timestamp": "2025-10-26T16:06:00.00Z"
}

Invalid date format

{
  "error_code": 31,
  "error_reason": "Invalid date format",
  "timestamp": "2025-10-26T16:07:00.00Z"
}

Date is outdated or invalid

{
  "error_code": 31,
  "error_reason": "Date is outdated or invalid",
  "timestamp": "2025-10-26T16:08:00.00Z"
}

Missing Digest header

{
  "error_code": 31,
  "error_reason": "Missing Digest header",
  "timestamp": "2025-10-26T16:09:00.00Z"
}

Invalid digest

{
  "error_code": 31,
  "error_reason": "Invalid digest",
  "timestamp": "2025-10-26T16:10:00.00Z"
}

Request timestamp has already been used

{
  "error_code": 31,
  "error_reason": "Request timestamp has already been used",
  "timestamp": "2025-10-26T16:11:00.00Z"
}

Invalid headers specification

{
  "error_code": 31,
  "error_reason": "Invalid headers specification",
  "timestamp": "2025-10-26T16:12:00.00Z"
}

Invalid signature

{
  "error_code": 31,
  "error_reason": "Invalid signature",
  "timestamp": "2025-10-26T16:13:00.00Z"
}

Processing error:

{
  "error_code": 210,
  "error_reason": "Processing error:",
  "description": "Processing error:",
  "request_id": "your_transaction_reference",
  "status": "error",
  "timestamp": "2025-10-26T12:03:00.000Z"
}

Missing required authentication headers

{
  "error_code": 31,
  "error_reason": "Missing required authentication headers",
  "timestamp": "2025-10-26T14:04:00.00Z"
}

Callback Notifications

The system sends an HTTP callback to the callback_url of your request when a transaction reaches a final state. Always verify the callback signature; see Callback Verification.

Callback Payload

Callback request

{
  "identifier": "U0000000WLTPMP1",
  "creation_date": "2025-11-16T13:50:22.460Z",
  "request_id": "b8c9d0e1-f2a3-b4c5-d6e7-f8a9b0c1d2e3",
  "reference": "ref-wlt-pp-h2h-6600778899",
  "method": "ussd",
  "type": "payment",
  "mode": "initial",
  "status": "success",
  "status_date": "2025-11-16T13:50:28.130Z",
  "amount": "2000.00",
  "currency": "NGN",
  "billing_amount": "2000.00",
  "billing_currency": "NGN",
  "fee_amount": "20.00",
  "fee_currency": "NGN",
  "customer": {
    "identifier": "cust_ng_808080",
    "email": "funmilayo.oladipupo@example.com",
    "phone": "+2347011223344",
    "first_name": "Funmilayo",
    "last_name": "Oladipupo",
    "country": "NG"
  },
  "error_code": 0,
  "error_reason": null,
  "timestamp": "2025-11-16T13:50:29.000Z",
  "meta": {
    "key": "value"
  }
}