curl --request POST \
  --url https://api.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-fabric-tenant-id: <x-fabric-tenant-id>' \
  --data '
{
  "data": [
    {
      "amount": 60.5,
      "reason": "CSR Adjustment",
      "attributes": {
        "productFamily": "Laptop computers"
      }
    }
  ]
}
'

import requests

url = "https://api.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments"

payload = { "data": [
        {
            "amount": 60.5,
            "reason": "CSR Adjustment",
            "attributes": { "productFamily": "Laptop computers" }
        }
    ] }
headers = {
    "x-fabric-tenant-id": "<x-fabric-tenant-id>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-fabric-tenant-id': '<x-fabric-tenant-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    data: [
      {
        amount: 60.5,
        reason: 'CSR Adjustment',
        attributes: {productFamily: 'Laptop computers'}
      }
    ]
  })
};

fetch('https://api.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments', 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.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments",
  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' => [
        [
                'amount' => 60.5,
                'reason' => 'CSR Adjustment',
                'attributes' => [
                                'productFamily' => 'Laptop computers'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "x-fabric-tenant-id: <x-fabric-tenant-id>"
  ],
]);

$response = curl_exec($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.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments"

	payload := strings.NewReader("{\n  \"data\": [\n    {\n      \"amount\": 60.5,\n      \"reason\": \"CSR Adjustment\",\n      \"attributes\": {\n        \"productFamily\": \"Laptop computers\"\n      }\n    }\n  ]\n}")

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

	req.Header.Add("x-fabric-tenant-id", "<x-fabric-tenant-id>")
	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.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments")
  .header("x-fabric-tenant-id", "<x-fabric-tenant-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": [\n    {\n      \"amount\": 60.5,\n      \"reason\": \"CSR Adjustment\",\n      \"attributes\": {\n        \"productFamily\": \"Laptop computers\"\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fabric.inc/v3/v3/carts/{cartId}/line-items/{lineItemId}/adjustments")

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

request = Net::HTTP::Post.new(url)
request["x-fabric-tenant-id"] = '<x-fabric-tenant-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": [\n    {\n      \"amount\": 60.5,\n      \"reason\": \"CSR Adjustment\",\n      \"attributes\": {\n        \"productFamily\": \"Laptop computers\"\n      }\n    }\n  ]\n}"

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

{
  "data": [
    {
      "id": "c695af14-5e33-402c-9d8d-71edcf4856a8",
      "amount": 60.5,
      "reason": "CSR Adjustment",
      "attributes": {
        "productFamily": "Laptop computers"
      },
      "createdAt": "2022-09-06T14:07:17.000Z",
      "updatedAt": "2022-09-06T14:07:17.000Z"
    }
  ]
}

{
  "type": "BAD_REQUEST",
  "message": "Bad Request"
}

{
  "type": "UNAUTHORIZED",
  "message": "Unauthorized User"
}

{
  "type": "NOT_FOUND",
  "message": "Cart not found"
}

{
  "type": "CONFLICT",
  "message": "Source was modified while the request was being processed"
}

{
  "type": "INTERNAL_SERVER_ERROR",
  "message": "Internal server error"
}