curl --request PATCH \
  --url https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/receivables/{externalReceivableId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/merge-patch+json' \
  --data '
{
  "sourceRevision": 2
}
'

const options = {
  method: 'PATCH',
  headers: {
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/merge-patch+json'
  },
  body: JSON.stringify({sourceRevision: 2})
};

fetch('https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/receivables/{externalReceivableId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/receivables/{externalReceivableId}"

payload = { "sourceRevision": 2 }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/merge-patch+json"
}

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

print(response.text)

package main

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

func main() {

	url := "https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/receivables/{externalReceivableId}"

	payload := strings.NewReader("{\n  \"sourceRevision\": 2\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/merge-patch+json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/receivables/{externalReceivableId}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/merge-patch+json")
  .body("{\n  \"sourceRevision\": 2\n}")
  .asString();

using RestSharp;


var options = new RestClientOptions("https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/receivables/{externalReceivableId}");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("Authorization", "Bearer <token>");
request.AddJsonBody("{\n  \"sourceRevision\": 2\n}", false);
var response = await client.PatchAsync(request);

Console.WriteLine("{0}", response.Content);