curl --request POST \
  --url https://api.qa.sima.ag/api/v2/third_party/campaigns/update_objective_yield \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-SIMA-SYSTEM-ID: <api-key>' \
  --data '
[
  {
    "campaign_id": 552223,
    "external_code": 2733,
    "objective_yield_kg_ha": 15
  },
  {
    "campaign_id": 553106,
    "external_code": 2735,
    "objective_yield_kg_ha": 26
  },
  {
    "campaign_id": 555090,
    "external_code": 2738,
    "objective_yield_kg_ha": 17
  },
  {
    "campaign_id": 555091,
    "external_code": 2739,
    "objective_yield_kg_ha": 28
  },
  {
    "campaign_id": 555092,
    "external_code": 2742,
    "objective_yield_kg_ha": 19
  },
  {
    "campaign_id": 555442,
    "external_code": 2744,
    "objective_yield_kg_ha": 30
  }
]
'

import requests

url = "https://api.qa.sima.ag/api/v2/third_party/campaigns/update_objective_yield"

payload = [
    {
        "campaign_id": 552223,
        "external_code": 2733,
        "objective_yield_kg_ha": 15
    },
    {
        "campaign_id": 553106,
        "external_code": 2735,
        "objective_yield_kg_ha": 26
    },
    {
        "campaign_id": 555090,
        "external_code": 2738,
        "objective_yield_kg_ha": 17
    },
    {
        "campaign_id": 555091,
        "external_code": 2739,
        "objective_yield_kg_ha": 28
    },
    {
        "campaign_id": 555092,
        "external_code": 2742,
        "objective_yield_kg_ha": 19
    },
    {
        "campaign_id": 555442,
        "external_code": 2744,
        "objective_yield_kg_ha": 30
    }
]
headers = {
    "Authorization": "Bearer <token>",
    "X-SIMA-SYSTEM-ID": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    Authorization: 'Bearer <token>',
    'X-SIMA-SYSTEM-ID': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify([
    {campaign_id: 552223, external_code: 2733, objective_yield_kg_ha: 15},
    {campaign_id: 553106, external_code: 2735, objective_yield_kg_ha: 26},
    {campaign_id: 555090, external_code: 2738, objective_yield_kg_ha: 17},
    {campaign_id: 555091, external_code: 2739, objective_yield_kg_ha: 28},
    {campaign_id: 555092, external_code: 2742, objective_yield_kg_ha: 19},
    {campaign_id: 555442, external_code: 2744, objective_yield_kg_ha: 30}
  ])
};

fetch('https://api.qa.sima.ag/api/v2/third_party/campaigns/update_objective_yield', 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.qa.sima.ag/api/v2/third_party/campaigns/update_objective_yield",
  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([
    [
        'campaign_id' => 552223,
        'external_code' => 2733,
        'objective_yield_kg_ha' => 15
    ],
    [
        'campaign_id' => 553106,
        'external_code' => 2735,
        'objective_yield_kg_ha' => 26
    ],
    [
        'campaign_id' => 555090,
        'external_code' => 2738,
        'objective_yield_kg_ha' => 17
    ],
    [
        'campaign_id' => 555091,
        'external_code' => 2739,
        'objective_yield_kg_ha' => 28
    ],
    [
        'campaign_id' => 555092,
        'external_code' => 2742,
        'objective_yield_kg_ha' => 19
    ],
    [
        'campaign_id' => 555442,
        'external_code' => 2744,
        'objective_yield_kg_ha' => 30
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "X-SIMA-SYSTEM-ID: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}