curl --request PUT \
  --url https://api.tangoanalytics.com/v1/assetmgmt/batch/assets \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-client: <api-key>' \
  --data '
{
  "records": [
    {
      "asset_id": "123456",
      "asset_instance_id": "1234567",
      "asset_instance_number": "1234",
      "asset_instance_name": "Locker",
      "asset_master_number": "M1234",
      "description": "This is a Locker.",
      "entity_number": "S123",
      "asset_class": "Security",
      "status": "Active",
      "asset_type": "Locker",
      "is_reservable": "Y"
    }
  ]
}
'

const options = {
  method: 'PUT',
  headers: {
    'x-client': '<api-key>',
    'x-api-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    records: [
      {
        asset_id: '123456',
        asset_instance_id: '1234567',
        asset_instance_number: '1234',
        asset_instance_name: 'Locker',
        asset_master_number: 'M1234',
        description: 'This is a Locker.',
        entity_number: 'S123',
        asset_class: 'Security',
        status: 'Active',
        asset_type: 'Locker',
        is_reservable: 'Y'
      }
    ]
  })
};

fetch('https://api.tangoanalytics.com/v1/assetmgmt/batch/assets', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.tangoanalytics.com/v1/assetmgmt/batch/assets"

payload = { "records": [
        {
            "asset_id": "123456",
            "asset_instance_id": "1234567",
            "asset_instance_number": "1234",
            "asset_instance_name": "Locker",
            "asset_master_number": "M1234",
            "description": "This is a Locker.",
            "entity_number": "S123",
            "asset_class": "Security",
            "status": "Active",
            "asset_type": "Locker",
            "is_reservable": "Y"
        }
    ] }
headers = {
    "x-client": "<api-key>",
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "status": "OK",
  "gu_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "status_message": "<string>"
}