curl --request POST \
  --url https://api.ipsofactura.com/cfdi/complemento-pago \
  --header 'Content-Type: application/json' \
  --header 'x-api: <api-key>' \
  --data '
{
  "rfc_emisor": "EKU9003173C9",
  "pagos": [
    {
      "fecha_pago": "2026-07-21T09:55:00",
      "forma_pago_p": "03",
      "moneda_p": "MXN",
      "monto": 1160,
      "num_operacion": "OP-0001",
      "documentos_relacionados": [
        {
          "factura_id": "<id-del-CFDI-PPD>",
          "imp_pagado": 1160
        }
      ]
    }
  ]
}
'

import requests

url = "https://api.ipsofactura.com/cfdi/complemento-pago"

payload = {
    "rfc_emisor": "EKU9003173C9",
    "pagos": [
        {
            "fecha_pago": "2026-07-21T09:55:00",
            "forma_pago_p": "03",
            "moneda_p": "MXN",
            "monto": 1160,
            "num_operacion": "OP-0001",
            "documentos_relacionados": [
                {
                    "factura_id": "<id-del-CFDI-PPD>",
                    "imp_pagado": 1160
                }
            ]
        }
    ]
}
headers = {
    "x-api": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    rfc_emisor: 'EKU9003173C9',
    pagos: [
      {
        fecha_pago: '2026-07-21T09:55:00',
        forma_pago_p: '03',
        moneda_p: 'MXN',
        monto: 1160,
        num_operacion: 'OP-0001',
        documentos_relacionados: [{factura_id: '<id-del-CFDI-PPD>', imp_pagado: 1160}]
      }
    ]
  })
};

fetch('https://api.ipsofactura.com/cfdi/complemento-pago', 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://api.ipsofactura.com/cfdi/complemento-pago",
  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([
    'rfc_emisor' => 'EKU9003173C9',
    'pagos' => [
        [
                'fecha_pago' => '2026-07-21T09:55:00',
                'forma_pago_p' => '03',
                'moneda_p' => 'MXN',
                'monto' => 1160,
                'num_operacion' => 'OP-0001',
                'documentos_relacionados' => [
                                [
                                                                'factura_id' => '<id-del-CFDI-PPD>',
                                                                'imp_pagado' => 1160
                                ]
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api: <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://api.ipsofactura.com/cfdi/complemento-pago"

	payload := strings.NewReader("{\n  \"rfc_emisor\": \"EKU9003173C9\",\n  \"pagos\": [\n    {\n      \"fecha_pago\": \"2026-07-21T09:55:00\",\n      \"forma_pago_p\": \"03\",\n      \"moneda_p\": \"MXN\",\n      \"monto\": 1160,\n      \"num_operacion\": \"OP-0001\",\n      \"documentos_relacionados\": [\n        {\n          \"factura_id\": \"<id-del-CFDI-PPD>\",\n          \"imp_pagado\": 1160\n        }\n      ]\n    }\n  ]\n}")

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

	req.Header.Add("x-api", "<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://api.ipsofactura.com/cfdi/complemento-pago")
  .header("x-api", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"rfc_emisor\": \"EKU9003173C9\",\n  \"pagos\": [\n    {\n      \"fecha_pago\": \"2026-07-21T09:55:00\",\n      \"forma_pago_p\": \"03\",\n      \"moneda_p\": \"MXN\",\n      \"monto\": 1160,\n      \"num_operacion\": \"OP-0001\",\n      \"documentos_relacionados\": [\n        {\n          \"factura_id\": \"<id-del-CFDI-PPD>\",\n          \"imp_pagado\": 1160\n        }\n      ]\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.ipsofactura.com/cfdi/complemento-pago")

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

request = Net::HTTP::Post.new(url)
request["x-api"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"rfc_emisor\": \"EKU9003173C9\",\n  \"pagos\": [\n    {\n      \"fecha_pago\": \"2026-07-21T09:55:00\",\n      \"forma_pago_p\": \"03\",\n      \"moneda_p\": \"MXN\",\n      \"monto\": 1160,\n      \"num_operacion\": \"OP-0001\",\n      \"documentos_relacionados\": [\n        {\n          \"factura_id\": \"<id-del-CFDI-PPD>\",\n          \"imp_pagado\": 1160\n        }\n      ]\n    }\n  ]\n}"

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

{
  "id": "169fe189-...",
  "uuid": "b0440bb7-...",
  "fecha_timbrado": "2026-07-21T09:56:00",
  "sello_cfdi": "...",
  "sello_sat": "...",
  "documentos_relacionados": [
    {
      "id_documento": "0bcfae68-...",
      "num_parcialidad": 1,
      "imp_pagado": "1160.00",
      "imp_saldo_insoluto": "0.00",
      "liquidado": true
    }
  ]
}

{
  "id": "<string>",
  "uuid": "<string>",
  "serie": "<string>",
  "folio": "<string>",
  "sandbox": true,
  "fecha_timbrado": "<string>",
  "sello_cfdi": "<string>",
  "sello_sat": "<string>",
  "documentos_relacionados": [
    {
      "id_documento": "<string>",
      "num_parcialidad": 123,
      "imp_pagado": "<string>",
      "imp_saldo_insoluto": "<string>",
      "liquidado": true
    }
  ]
}