curl --request POST \
  --url https://lender.sandbox.lerian.net/api/v1/loan-accounts/{id}/preview-repayment \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": "125.00",
  "effectiveDate": "2026-06-14",
  "transactionDate": "2026-06-14"
}
'

import requests

url = "https://lender.sandbox.lerian.net/api/v1/loan-accounts/{id}/preview-repayment"

payload = {
    "amount": "125.00",
    "effectiveDate": "2026-06-14",
    "transactionDate": "2026-06-14"
}
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({amount: '125.00', effectiveDate: '2026-06-14', transactionDate: '2026-06-14'})
};

fetch('https://lender.sandbox.lerian.net/api/v1/loan-accounts/{id}/preview-repayment', 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-accounts/{id}/preview-repayment",
  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([
    'amount' => '125.00',
    'effectiveDate' => '2026-06-14',
    'transactionDate' => '2026-06-14'
  ]),
  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-accounts/{id}/preview-repayment"

	payload := strings.NewReader("{\n  \"amount\": \"125.00\",\n  \"effectiveDate\": \"2026-06-14\",\n  \"transactionDate\": \"2026-06-14\"\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-accounts/{id}/preview-repayment")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount\": \"125.00\",\n  \"effectiveDate\": \"2026-06-14\",\n  \"transactionDate\": \"2026-06-14\"\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"amount\": \"125.00\",\n  \"effectiveDate\": \"2026-06-14\",\n  \"transactionDate\": \"2026-06-14\"\n}"

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

{
  "allocations": [
    {
      "dueDate": "2026-06-14",
      "feesAmount": "3.50",
      "fullyPaid": true,
      "installmentNumber": 3,
      "interestAmount": "20.00",
      "penaltiesAmount": "1.50",
      "principalAmount": "100.00",
      "totalAmount": "125.00"
    }
  ],
  "appliedAmount": "125.00",
  "backdated": true,
  "effectiveDate": "2026-06-14",
  "loanAccountId": "550e8400-e29b-41d4-a716-446655440000",
  "overpaymentAmount": "0.00"
}

{
  "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"
  }
}