curl --request PATCH \
  --url https://api.arcuserp.com/v1/returns/{id}/items/{item_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason_words": "<string>"
}
'

import requests

url = "https://api.arcuserp.com/v1/returns/{id}/items/{item_id}"

payload = { "reason_words": "<string>" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

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

fetch('https://api.arcuserp.com/v1/returns/{id}/items/{item_id}', 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.arcuserp.com/v1/returns/{id}/items/{item_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'reason_words' => '<string>'
  ]),
  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://api.arcuserp.com/v1/returns/{id}/items/{item_id}"

	payload := strings.NewReader("{\n  \"reason_words\": \"<string>\"\n}")

	req, _ := http.NewRequest("PATCH", 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.patch("https://api.arcuserp.com/v1/returns/{id}/items/{item_id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reason_words\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.arcuserp.com/v1/returns/{id}/items/{item_id}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reason_words\": \"<string>\"\n}"

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

{
  "data": {
    "return_item_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "reason_code": "<string>",
    "reason_change": {
      "field": "reason",
      "changed": true,
      "before": "<string>",
      "after": "<string>",
      "words_note_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "kept_words_note_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "lines": [
        {
          "return_item_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
          "before": "<string>",
          "after": "<string>"
        }
      ],
      "fees": {
        "recomputed": true,
        "reason": "settled",
        "changed": true,
        "restocking_fee_before": 123,
        "restocking_fee_after": 123,
        "fee_lines_before": 123,
        "fee_lines_after": 123,
        "kept_by_hand": {
          "restocking_fee": true,
          "rules": [
            "<string>"
          ]
        }
      },
      "return_item_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    }
  }
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123"
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123"
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123",
  "message": "<string>",
  "permission_key": "<string>",
  "role": "<string>"
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123"
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123",
  "meta": {
    "issued": [
      {
        "kind": "credit",
        "number": "<string>"
      }
    ]
  }
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123"
}