Map your codes

curl --request PUT \
  --url https://staging2.xfaster.net/api/partner/v1/menu/mapping \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "items": [
    {
      "id": 3062,
      "external_id": "BURG-SMASH",
      "barcode": "7290000066318"
    }
  ],
  "addons": [
    {
      "id": 412,
      "external_id": "ADD-CHEDDAR"
    }
  ]
}
'

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    items: [{id: 3062, external_id: 'BURG-SMASH', barcode: '7290000066318'}],
    addons: [{id: 412, external_id: 'ADD-CHEDDAR'}]
  })
};

fetch('https://staging2.xfaster.net/api/partner/v1/menu/mapping', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://staging2.xfaster.net/api/partner/v1/menu/mapping"

payload = {
    "items": [
        {
            "id": 3062,
            "external_id": "BURG-SMASH",
            "barcode": "7290000066318"
        }
    ],
    "addons": [
        {
            "id": 412,
            "external_id": "ADD-CHEDDAR"
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://staging2.xfaster.net/api/partner/v1/menu/mapping",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'items' => [
        [
                'id' => 3062,
                'external_id' => 'BURG-SMASH',
                'barcode' => '7290000066318'
        ]
    ],
    'addons' => [
        [
                'id' => 412,
                'external_id' => 'ADD-CHEDDAR'
        ]
    ]
  ]),
  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;
}

{
  "items": 2,
  "addons": 1
}