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POST
/
ach_returns
Create ACH Return
curl --request POST \
  --url https://int-api.mx.com/ach_returns \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '{}'
import requests

url = "https://int-api.mx.com/ach_returns"

payload = {}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({})
};

fetch('https://int-api.mx.com/ach_returns', 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://int-api.mx.com/ach_returns",
  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([
    
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://int-api.mx.com/ach_returns"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Basic <encoded-value>")
	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://int-api.mx.com/ach_returns")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://int-api.mx.com/ach_returns")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{}"

response = http.request(request)
puts response.read_body
{
  "ach_return": {
    "account_guid": "ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1",
    "account_number_last_four": "1234",
    "account_type": "CHECKING",
    "ach_initiated_at": "2025-02-13T18:08:00+00:00",
    "client_guid": "CLT-abcd-1234",
    "corrected_account_number": null,
    "corrected_routing_number": null,
    "created_at": "2025-02-13T18:08:00+00:00",
    "guid": "ACH-d74cb14f-fd0a-449f-991b-e0362a63d9c6",
    "id": "client_ach_return_id_1234",
    "institution_guid": "INS-34r4f44b-cfge-0f6e-3484-21f47e45tfv7",
    "investigation_notes": null,
    "member_guid": "MBR-7c6f361b-e582-15b6-60c0-358f12466b4b",
    "processing_errors": null,
    "resolution_code": null,
    "resolution_detail": null,
    "resolved_status_at": null,
    "return_code": "R01",
    "return_notes": null,
    "return_account_number": null,
    "return_routing_number": null,
    "return_status": "SUBMITTED",
    "returned_at": "2025-02-13T18:09:00+00:00",
    "sec_code": "PPD",
    "started_processing_at": null,
    "submitted_at": null,
    "transaction_amount": 225.84,
    "updated_at": "null",
    "user_guid": "USR-fa7537f3-48aa-a683-a02a-b18940482f54"
  }
}
The features documented here are in a beta state, and this documentation is considered draft material subject to frequent change.
Use this endpoint to create an ACH return in our system.

Authorizations

​
Authorization
string
header
required

The MX Platform API requires basic access authentication using your client_id and api_key. These credentials must be Base64 encoded and included in the Authorization header of each API request to ensure secure access.

Here's an example using curl to access v20250224. Replace https://int-api.mx.com/endpoint with the actual API endpoint you wish to access and your Base64 encoded client_id and api_key.

curl -L -X POST `https://int-api.mx.com/endpoint' \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-H 'Accept-Version: v20250224'
-H 'Authorization: Basic BASE_64_ENCODING_OF{client_id:api_key}'

Body

application/json

ACH return object to be created.

​
ach_return
object

Response

200 - application/json

OK

​
ach_return
object