> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.crisscross.money/api-reference/collect/payments/manage-payments/get-transaction/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.crisscross.money/_mcp/server.

# Retrieve Payment Status (Transaction)

GET https://api.crisscross.money/v1/payment/{transactionId}

Retrieves status/details of a transaction by `transactionId`.

Reference: https://docs.crisscross.money/api-reference/collect/payments/manage-payments/get-transaction

## Request

### Path parameters

- `transactionId` (string, required) — Unique identifier for the transaction.

## Response

### 200

Transaction status retrieved successfully.

- `status` (string, required) — Current transaction status.
- `transactionId` (string, required) — Unique identifier for the transaction.
- `message` (string, required) — Human-readable status message.
- `authState` (AuthState, optional) — Detail for the transaction's current state. When the transaction status is `AUTH_REQUIRED`, `authMethodType` says how the payer completes authentication, and a matching detail object (`redirect`, `fields`, `ussd`, `bankTransfer`) carries the specifics. Error states instead carry `code`, `message`, and the raw `connectorFailureCode`/`connectorFailureMessage`.
- `sessionId` (string, optional) — Session the transaction belongs to.
- `merchantReference` (string, optional) — Merchant reference from the original session.
- `processorName` (string, optional) — Name of the payment processor (if assigned).
- `processorReference` (string, optional) — Processor reference (if available).
- `paymentMethodId` (string, optional) — The payment method used, e.g. `card` or `mobilemoney`.
- `identifiers` (map from string to string, optional) — Additional identifiers, usually `sessionId` and `payerId`.
- `paymentAttributes` (map from string to string, optional) — Attributes associated with the payment.
- `batchPayoutId` (string, optional) — Batch payout identifier, present when the transaction is part of a batch payout.
- `collection` (FxMoneyAmount, optional) — Amount the customer paid in the collection currency. Present only on transactions converted by [Adaptive Currency Conversion](/adaptive-currency-conversion) — per-session rate or [rate lock](/rate-locks).
- `fxMidRate` (string, optional) — Spot mid-market rate at the time the FX quote was committed for this attempt (decimal string, 8 decimal places). Present only on FX-converted transactions.
- `fxAllInRate` (string, optional) — Mid rate + markup — the rate this attempt was actually converted at (decimal string, 8 decimal places). Present only on FX-converted transactions.
- `fxMarkupBps` (integer, optional) — Markup applied to this attempt in basis points (100 bps = 1%). Present only on FX-converted transactions.
- `fxFee` (FxMoneyAmount, optional) — Conversion fee, denominated in the collection currency. Present only on FX-converted transactions.

## Errors

### 401 Unauthorized Error

Unauthorized.

- `message` (string, required) — Human-readable description of what went wrong.
- `error` (string, required) — Error category. Most endpoints return the HTTP reason phrase (e.g. "Bad Request", "Unauthorized", "Conflict", "Unprocessable Entity", "Internal Server Error"). Some return a machine-readable snake_case code instead — notably the FX and rate-lock rejections on checkout session creation and payment initiation, where several distinct codes share a single HTTP status. Where a code is present it is the finer discriminator and is safe to branch on.
- `statusCode` (integer, required) — HTTP status code, mirroring the response header. The response header is the source of truth.

### 404 Not Found Error

Transaction not found.

- `message` (string, required) — Human-readable description of what went wrong.
- `error` (string, required) — Error category. Most endpoints return the HTTP reason phrase (e.g. "Bad Request", "Unauthorized", "Conflict", "Unprocessable Entity", "Internal Server Error"). Some return a machine-readable snake_case code instead — notably the FX and rate-lock rejections on checkout session creation and payment initiation, where several distinct codes share a single HTTP status. Where a code is present it is the finer discriminator and is safe to branch on.
- `statusCode` (integer, required) — HTTP status code, mirroring the response header. The response header is the source of truth.

### 422 Unprocessable Entity Error

Unprocessable Entity.

- `message` (string, required) — Human-readable description of what went wrong.
- `error` (string, required) — Error category. Most endpoints return the HTTP reason phrase (e.g. "Bad Request", "Unauthorized", "Conflict", "Unprocessable Entity", "Internal Server Error"). Some return a machine-readable snake_case code instead — notably the FX and rate-lock rejections on checkout session creation and payment initiation, where several distinct codes share a single HTTP status. Where a code is present it is the finer discriminator and is safe to branch on.
- `statusCode` (integer, required) — HTTP status code, mirroring the response header. The response header is the source of truth.

## Types

### AuthState

Detail for the transaction's current state. When the transaction status is `AUTH_REQUIRED`, `authMethodType` says how the payer completes authentication, and a matching detail object (`redirect`, `fields`, `ussd`, `bankTransfer`) carries the specifics. Error states instead carry `code`, `message`, and the raw `connectorFailureCode`/`connectorFailureMessage`.

- `state` (string, optional) — Transaction state name. In-flight states are uppercase (`PENDING`, `SCREENING_PENDING`, `SCREENING_COMPLETED`, `AUTH_REQUIRED`); terminal states are lowercase (`completed`, `failed`, `error`, `cancelled`, `expired`, `settled`). Match exact values, casing included.
- `transitionedAt` (string, optional) — ISO 8601 timestamp when the transaction entered this state.
- `authMethodType` (enum, optional) — How the payer completes authentication. Present on `AUTH_REQUIRED` states.
  - Allowed values: `redirect`, `fields`, `ussd`, `pendingApproval`, `bankTransfer`, `none`
- `redirect` (AuthStateRedirect, optional) — Present when `authMethodType` is `redirect` — send the payer to `url`.

### FxMoneyAmount

Monetary amount as a decimal-string major unit + ISO 4217 currency code.

- `amount` (string, required) — Decimal string in major units.
- `currency` (string, required) — ISO 4217 currency code.

### AuthStateRedirect

Present when `authMethodType` is `redirect` — send the payer to `url`.

- `url` (string, optional) — URL to redirect the payer to for authentication.
- `requiresTopLevel` (boolean, optional) — When true, the browser must navigate top-level to `url` rather than embedding it in an iframe.

## Examples

**Response**

```json
{
  "status": "string",
  "transactionId": "string",
  "message": "string",
  "authState": {
    "state": "string",
    "transitionedAt": "string",
    "authMethodType": "redirect",
    "redirect": {
      "url": "string",
      "requiresTopLevel": true
    }
  },
  "sessionId": "string",
  "merchantReference": "string",
  "processorName": "string",
  "processorReference": "string",
  "paymentMethodId": "string",
  "identifiers": {},
  "paymentAttributes": {},
  "batchPayoutId": "string",
  "collection": {
    "amount": "string",
    "currency": "string"
  },
  "fxMidRate": "string",
  "fxAllInRate": "string",
  "fxMarkupBps": 1,
  "fxFee": {
    "amount": "string",
    "currency": "string"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.crisscross.money/v1/payment/transactionId"

response = requests.get(url)

print(response.json())
```

```javascript
const url = 'https://api.crisscross.money/v1/payment/transactionId';
const options = {method: 'GET'};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.crisscross.money/v1/payment/transactionId"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.crisscross.money/v1/payment/transactionId")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.crisscross.money/v1/payment/transactionId")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.crisscross.money/v1/payment/transactionId');

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.crisscross.money/v1/payment/transactionId");
var request = new RestRequest(Method.GET);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let request = NSMutableURLRequest(url: NSURL(string: "https://api.crisscross.money/v1/payment/transactionId")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```