curl --request POST \
  --url https://api.terminal49.com/v2/tracking_requests \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "attributes": {
      "request_type": "bill_of_lading",
      "request_number": "MEDUFR030802",
      "ref_numbers": [
        "PO12345",
        "HBL12345",
        "CUSREF1234"
      ],
      "shipment_tags": [
        "camembert"
      ],
      "scac": "MSCU"
    },
    "relationships": {
      "customer": {
        "data": {
          "id": "f7cb530a-9e60-412c-a5bc-205a2f34ba54",
          "type": "party"
        }
      }
    },
    "type": "tracking_request"
  }
}
'

import requests

url = "https://api.terminal49.com/v2/tracking_requests"

payload = { "data": {
        "attributes": {
            "request_type": "bill_of_lading",
            "request_number": "MEDUFR030802",
            "ref_numbers": ["PO12345", "HBL12345", "CUSREF1234"],
            "shipment_tags": ["camembert"],
            "scac": "MSCU"
        },
        "relationships": { "customer": { "data": {
                    "id": "f7cb530a-9e60-412c-a5bc-205a2f34ba54",
                    "type": "party"
                } } },
        "type": "tracking_request"
    } }
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    data: {
      attributes: {
        request_type: 'bill_of_lading',
        request_number: 'MEDUFR030802',
        ref_numbers: ['PO12345', 'HBL12345', 'CUSREF1234'],
        shipment_tags: ['camembert'],
        scac: 'MSCU'
      },
      relationships: {customer: {data: {id: 'f7cb530a-9e60-412c-a5bc-205a2f34ba54', type: 'party'}}},
      type: 'tracking_request'
    }
  })
};

fetch('https://api.terminal49.com/v2/tracking_requests', 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.terminal49.com/v2/tracking_requests",
  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([
    'data' => [
        'attributes' => [
                'request_type' => 'bill_of_lading',
                'request_number' => 'MEDUFR030802',
                'ref_numbers' => [
                                'PO12345',
                                'HBL12345',
                                'CUSREF1234'
                ],
                'shipment_tags' => [
                                'camembert'
                ],
                'scac' => 'MSCU'
        ],
        'relationships' => [
                'customer' => [
                                'data' => [
                                                                'id' => 'f7cb530a-9e60-412c-a5bc-205a2f34ba54',
                                                                'type' => 'party'
                                ]
                ]
        ],
        'type' => 'tracking_request'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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.terminal49.com/v2/tracking_requests"

	payload := strings.NewReader("{\n  \"data\": {\n    \"attributes\": {\n      \"request_type\": \"bill_of_lading\",\n      \"request_number\": \"MEDUFR030802\",\n      \"ref_numbers\": [\n        \"PO12345\",\n        \"HBL12345\",\n        \"CUSREF1234\"\n      ],\n      \"shipment_tags\": [\n        \"camembert\"\n      ],\n      \"scac\": \"MSCU\"\n    },\n    \"relationships\": {\n      \"customer\": {\n        \"data\": {\n          \"id\": \"f7cb530a-9e60-412c-a5bc-205a2f34ba54\",\n          \"type\": \"party\"\n        }\n      }\n    },\n    \"type\": \"tracking_request\"\n  }\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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://api.terminal49.com/v2/tracking_requests")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"attributes\": {\n      \"request_type\": \"bill_of_lading\",\n      \"request_number\": \"MEDUFR030802\",\n      \"ref_numbers\": [\n        \"PO12345\",\n        \"HBL12345\",\n        \"CUSREF1234\"\n      ],\n      \"shipment_tags\": [\n        \"camembert\"\n      ],\n      \"scac\": \"MSCU\"\n    },\n    \"relationships\": {\n      \"customer\": {\n        \"data\": {\n          \"id\": \"f7cb530a-9e60-412c-a5bc-205a2f34ba54\",\n          \"type\": \"party\"\n        }\n      }\n    },\n    \"type\": \"tracking_request\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.terminal49.com/v2/tracking_requests")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"attributes\": {\n      \"request_type\": \"bill_of_lading\",\n      \"request_number\": \"MEDUFR030802\",\n      \"ref_numbers\": [\n        \"PO12345\",\n        \"HBL12345\",\n        \"CUSREF1234\"\n      ],\n      \"shipment_tags\": [\n        \"camembert\"\n      ],\n      \"scac\": \"MSCU\"\n    },\n    \"relationships\": {\n      \"customer\": {\n        \"data\": {\n          \"id\": \"f7cb530a-9e60-412c-a5bc-205a2f34ba54\",\n          \"type\": \"party\"\n        }\n      }\n    },\n    \"type\": \"tracking_request\"\n  }\n}"

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

{
  "data": {
    "id": "ba4cb904-827f-4038-8e31-1e92b3356218",
    "type": "tracking_request",
    "attributes": {
      "request_number": "MEDUFR030802",
      "request_type": "bill_of_lading",
      "scac": "MSCU",
      "ref_numbers": [],
      "created_at": "2020-04-04T16:13:35-07:00",
      "updated_at": "2020-04-04T17:13:35-07:00",
      "status": "pending",
      "failed_reason": null
    },
    "relationships": {
      "tracked_object": {
        "data": null
      },
      "customer": {
        "data": {
          "id": "f7cb530a-9e60-412c-a5bc-205a2f34ba54",
          "type": "party"
        }
      }
    },
    "links": {
      "self": "/v2/tracking_requests/ba4cb904-827f-4038-8e31-1e92b3356218"
    }
  }
}

{
  "errors": [
    {
      "status": "422",
      "source": {
        "pointer": "/data/attributes/scac"
      },
      "title": "Unprocessable Entity",
      "detail": "Scac can't be blank",
      "code": "blank"
    },
    {
      "status": "422",
      "source": {
        "pointer": "/data/attributes/scac"
      },
      "title": "Unprocessable Entity",
      "detail": "Scac 'XXXX' is not recognized",
      "code": "blank"
    },
    {
      "status": "422",
      "source": {
        "pointer": "/data/attributes/scac"
      },
      "title": "Unprocessable Entity",
      "detail": "Scac 'UALC' is not supported. We do not currently integrate with Universal Africa Lines",
      "code": "blank"
    },
    {
      "status": "422",
      "source": {
        "pointer": "/data/attributes/request_number"
      },
      "title": "Unprocessable Entity",
      "detail": "Request number can't be blank",
      "code": "blank"
    }
  ]
}

{
  "errors": [
    {
      "status": "429",
      "title": "Too Many Requests",
      "detail": "You've hit the create tracking requests limit. Please try again in a minute."
    }
  ]
}