curl --request POST \
--url https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate \
--header 'Content-Type: application/json' \
--header 'x-api-key: <api-key>' \
--data '
{
"outcome": "success"
}
'import requests
url = "https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate"
payload = { "outcome": "success" }
headers = {
"x-api-key": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({outcome: 'success'})
};
fetch('https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'outcome' => 'success'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"x-api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate"
payload := strings.NewReader("{\n \"outcome\": \"success\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("x-api-key", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate")
.header("x-api-key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"outcome\": \"success\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"outcome\": \"success\"\n}"
response = http.request(request)
puts response.read_body{
"data": {
"transactionId": "<string>",
"customerId": "<string>",
"sourceId": "<string>",
"destinationId": "<string>",
"sourceAmount": "<string>",
"sourceCurrency": "<string>",
"destinationAmount": "<string>",
"destinationCurrency": "<string>",
"type": "DEPOSIT",
"channel": "BANK_ACCOUNT",
"status": "PENDING",
"merchantReference": "<string>",
"rate": "<string>",
"fee": "<string>",
"meta": {
"narration": "<string>",
"otpRequired": true,
"failureReason": {
"code": "AFX_VELOCITY_LIMIT_EXCEEDED",
"message": "<string>",
"retryable": true
}
},
"createdAt": "<string>",
"updatedAt": "<string>"
}
}{
"code": "<string>",
"error": "<string>",
"details": {
"errorMessage": "<string>",
"friendlyMessage": "<string>",
"data": {
"customerId": "<string>"
}
}
}{
"code": "<string>",
"error": "<string>",
"details": {
"errorMessage": "<string>",
"friendlyMessage": "<string>",
"data": {
"customerId": "<string>"
}
}
}Simulate Transaction Outcome
Sandbox only; returns 403 in production. Completes a pending sandbox deposit or payout with the outcome you choose, and your balance and transaction webhook behave as they would in production. The transaction must still be PENDING, PROCESSING or UNKNOWN: a deposit waiting for an OTP must be authorized first. Use it for a payment method whose account number, phone number or card ends in 0003, which stays pending until simulated, or to complete any other pending sandbox transaction early. The result arrives by webhook shortly after this call returns.
curl --request POST \
--url https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate \
--header 'Content-Type: application/json' \
--header 'x-api-key: <api-key>' \
--data '
{
"outcome": "success"
}
'import requests
url = "https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate"
payload = { "outcome": "success" }
headers = {
"x-api-key": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({outcome: 'success'})
};
fetch('https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'outcome' => 'success'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"x-api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate"
payload := strings.NewReader("{\n \"outcome\": \"success\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("x-api-key", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate")
.header("x-api-key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"outcome\": \"success\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://sandbox.api.afriex.com/api/v1/transaction/{transactionId}/simulate")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"outcome\": \"success\"\n}"
response = http.request(request)
puts response.read_body{
"data": {
"transactionId": "<string>",
"customerId": "<string>",
"sourceId": "<string>",
"destinationId": "<string>",
"sourceAmount": "<string>",
"sourceCurrency": "<string>",
"destinationAmount": "<string>",
"destinationCurrency": "<string>",
"type": "DEPOSIT",
"channel": "BANK_ACCOUNT",
"status": "PENDING",
"merchantReference": "<string>",
"rate": "<string>",
"fee": "<string>",
"meta": {
"narration": "<string>",
"otpRequired": true,
"failureReason": {
"code": "AFX_VELOCITY_LIMIT_EXCEEDED",
"message": "<string>",
"retryable": true
}
},
"createdAt": "<string>",
"updatedAt": "<string>"
}
}{
"code": "<string>",
"error": "<string>",
"details": {
"errorMessage": "<string>",
"friendlyMessage": "<string>",
"data": {
"customerId": "<string>"
}
}
}{
"code": "<string>",
"error": "<string>",
"details": {
"errorMessage": "<string>",
"friendlyMessage": "<string>",
"data": {
"customerId": "<string>"
}
}
}403 in production.TRANSACTION.UPDATED webhook behave exactly as they would in production.
Use this whenever you want a deterministic outcome without waiting on the default sandbox settlement window (~5 minutes):
- Pending on purpose. A payment method whose account number, phone number or card ends in
0003staysPENDINGuntil you call this endpoint. - Speed up any other pending sandbox transaction. Call it to finalize sooner than the ~5 minute default.
PENDING, PROCESSING or UNKNOWN. A deposit waiting on OTP (CUSTOMER_ACTION_REQUIRED) must be authorized via Authorize Transaction first.
See the Sandbox testing guide for the full test-value taxonomy.Authorizations
Static business API key issued from the dashboard. A business can provision multiple API keys, each scoped to a configurable set of permissions (e.g. read transactions, create deposits, etc). Permissions are chosen per key at creation time in the dashboard and may be revoked by deleting the key. Manage your keys and their permissions under Developer → API keys in the dashboard.
A request whose key does not carry the permission the target
endpoint requires is rejected with 401 Unauthorized, the same
response an unrecognised, malformed, revoked or disabled key
returns. The API does not distinguish the two cases on the wire.
See the Permissions reference for the permission each endpoint requires.
Headers
API version in ISO 8601 format. The only supported version is 2026-05-18, which is also the default when the header is omitted. Any other value is rejected with a 400 Bad Request.
Path Parameters
The unique identifier of the transaction
Body
The status to finalize the transaction to.
success, failed Response
Accepted. The transaction as it stands before it is finalized.
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