curl --request POST \
  --url https://api.example.com/v1/identifier_links \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "parent": {
    "value": "<string>",
    "carrier": "<string>"
  },
  "child": {
    "value": "<string>",
    "carrier": "<string>"
  },
  "valid_from": "<string>",
  "valid_to": "<string>"
}
'

import requests

url = "https://api.example.com/v1/identifier_links"

payload = {
    "parent": {
        "value": "<string>",
        "carrier": "<string>"
    },
    "child": {
        "value": "<string>",
        "carrier": "<string>"
    },
    "valid_from": "<string>",
    "valid_to": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    parent: {value: '<string>', carrier: '<string>'},
    child: {value: '<string>', carrier: '<string>'},
    valid_from: '<string>',
    valid_to: '<string>'
  })
};

fetch('https://api.example.com/v1/identifier_links', 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.example.com/v1/identifier_links",
  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([
    'parent' => [
        'value' => '<string>',
        'carrier' => '<string>'
    ],
    'child' => [
        'value' => '<string>',
        'carrier' => '<string>'
    ],
    'valid_from' => '<string>',
    'valid_to' => '<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.example.com/v1/identifier_links"

	payload := strings.NewReader("{\n  \"parent\": {\n    \"value\": \"<string>\",\n    \"carrier\": \"<string>\"\n  },\n  \"child\": {\n    \"value\": \"<string>\",\n    \"carrier\": \"<string>\"\n  },\n  \"valid_from\": \"<string>\",\n  \"valid_to\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", 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.post("https://api.example.com/v1/identifier_links")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"parent\": {\n    \"value\": \"<string>\",\n    \"carrier\": \"<string>\"\n  },\n  \"child\": {\n    \"value\": \"<string>\",\n    \"carrier\": \"<string>\"\n  },\n  \"valid_from\": \"<string>\",\n  \"valid_to\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/identifier_links")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"parent\": {\n    \"value\": \"<string>\",\n    \"carrier\": \"<string>\"\n  },\n  \"child\": {\n    \"value\": \"<string>\",\n    \"carrier\": \"<string>\"\n  },\n  \"valid_from\": \"<string>\",\n  \"valid_to\": \"<string>\"\n}"

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

{
  "object": "identifier_link",
  "relation": "same_as",
  "parent": {
    "scheme": "tracking_number",
    "value": "<string>",
    "carrier": "<string>"
  },
  "child": {
    "scheme": "tracking_number",
    "value": "<string>",
    "carrier": "<string>"
  },
  "id": "<string>",
  "valid_from": "<string>",
  "valid_to": "<string>",
  "producer": "<string>",
  "record": "<string>"
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "doc_url": "<string>",
    "request_id": "<string>",
    "carrier": {
      "id": "<string>",
      "connection": "<string>",
      "code": "<string>",
      "message": "<string>"
    },
    "shipment": "<string>",
    "details": [
      {
        "code": "<string>",
        "message": "<string>",
        "param": "<string>"
      }
    ]
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "doc_url": "<string>",
    "request_id": "<string>",
    "carrier": {
      "id": "<string>",
      "connection": "<string>",
      "code": "<string>",
      "message": "<string>"
    },
    "shipment": "<string>",
    "details": [
      {
        "code": "<string>",
        "message": "<string>",
        "param": "<string>"
      }
    ]
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "doc_url": "<string>",
    "request_id": "<string>",
    "carrier": {
      "id": "<string>",
      "connection": "<string>",
      "code": "<string>",
      "message": "<string>"
    },
    "shipment": "<string>",
    "details": [
      {
        "code": "<string>",
        "message": "<string>",
        "param": "<string>"
      }
    ]
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "doc_url": "<string>",
    "request_id": "<string>",
    "carrier": {
      "id": "<string>",
      "connection": "<string>",
      "code": "<string>",
      "message": "<string>"
    },
    "shipment": "<string>",
    "details": [
      {
        "code": "<string>",
        "message": "<string>",
        "param": "<string>"
      }
    ]
  }
}