curl --request POST \
  --url https://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "changeReason": "<string>",
  "currency": "BRL",
  "jurisdictionCode": "BR",
  "fixedAnnualRateBps": 1850,
  "floatingRateTableId": "550e8400-e29b-41d4-a716-446655440002",
  "floatingSpreadBps": 1850,
  "jurisdictionExtensions": {},
  "rateMode": "fixed",
  "requiresFloatingRate": true
}
'

import requests

url = "https://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions"

payload = {
    "changeReason": "<string>",
    "currency": "BRL",
    "jurisdictionCode": "BR",
    "fixedAnnualRateBps": 1850,
    "floatingRateTableId": "550e8400-e29b-41d4-a716-446655440002",
    "floatingSpreadBps": 1850,
    "jurisdictionExtensions": {},
    "rateMode": "fixed",
    "requiresFloatingRate": True
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    changeReason: '<string>',
    currency: 'BRL',
    jurisdictionCode: 'BR',
    fixedAnnualRateBps: 1850,
    floatingRateTableId: '550e8400-e29b-41d4-a716-446655440002',
    floatingSpreadBps: 1850,
    jurisdictionExtensions: {},
    rateMode: 'fixed',
    requiresFloatingRate: true
  })
};

fetch('https://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions', 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://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions",
  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([
    'changeReason' => '<string>',
    'currency' => 'BRL',
    'jurisdictionCode' => 'BR',
    'fixedAnnualRateBps' => 1850,
    'floatingRateTableId' => '550e8400-e29b-41d4-a716-446655440002',
    'floatingSpreadBps' => 1850,
    'jurisdictionExtensions' => [
        
    ],
    'rateMode' => 'fixed',
    'requiresFloatingRate' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions"

	payload := strings.NewReader("{\n  \"changeReason\": \"<string>\",\n  \"currency\": \"BRL\",\n  \"jurisdictionCode\": \"BR\",\n  \"fixedAnnualRateBps\": 1850,\n  \"floatingRateTableId\": \"550e8400-e29b-41d4-a716-446655440002\",\n  \"floatingSpreadBps\": 1850,\n  \"jurisdictionExtensions\": {},\n  \"rateMode\": \"fixed\",\n  \"requiresFloatingRate\": true\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"changeReason\": \"<string>\",\n  \"currency\": \"BRL\",\n  \"jurisdictionCode\": \"BR\",\n  \"fixedAnnualRateBps\": 1850,\n  \"floatingRateTableId\": \"550e8400-e29b-41d4-a716-446655440002\",\n  \"floatingSpreadBps\": 1850,\n  \"jurisdictionExtensions\": {},\n  \"rateMode\": \"fixed\",\n  \"requiresFloatingRate\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://lender.sandbox.lerian.net/api/v1/loan-products/{id}/versions")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"changeReason\": \"<string>\",\n  \"currency\": \"BRL\",\n  \"jurisdictionCode\": \"BR\",\n  \"fixedAnnualRateBps\": 1850,\n  \"floatingRateTableId\": \"550e8400-e29b-41d4-a716-446655440002\",\n  \"floatingSpreadBps\": 1850,\n  \"jurisdictionExtensions\": {},\n  \"rateMode\": \"fixed\",\n  \"requiresFloatingRate\": true\n}"

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

{
  "changeReason": "<string>",
  "createdAt": "2026-06-14T12:00:00Z",
  "currency": "BRL",
  "fixedAnnualRateBps": 1850,
  "floatingSpreadBps": 1850,
  "id": "550e8400-e29b-41d4-a716-446655440001",
  "jurisdictionCode": "BR",
  "productId": "550e8400-e29b-41d4-a716-446655440000",
  "rateMode": "fixed",
  "requiresFloatingRate": true,
  "floatingRateTableId": "550e8400-e29b-41d4-a716-446655440002",
  "jurisdictionExtensions": {}
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}