解决Amazon Advertising API创建关键词时返回422错误

<?php

$ch = curl_init();

$std_url = "YOUR_API_ENDPOINT"; // 替换为你的API端点
$accesstoken = "YOUR_ACCESS_TOKEN"; // 替换为你的访问令牌
$client = "YOUR_CLIENT_ID"; // 替换为你的客户端ID
$API_Scope = "YOUR_API_SCOPE"; // 替换为你的API Scope

curl_setopt($ch, CURLOPT_URL, $std_url . "/v2/sp/keywords");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, true);

// 正确的数据格式：关键词数据包装在数组中
$data_string = array(array(
    "campaignId" => "111111111111", // 替换为你的 Campaign ID
    "adGroupId" => "2222222222222", // 替换为你的 Ad Group ID
    "state" => "enabled",
    "keywordText" => "YetAnotherKeyword",
    "matchType" => "broad",
    "bid" => "0.05"
));

// 将PHP数组编码为JSON字符串
$data_string_json = json_encode($data_string);

curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string_json);

$headers = array();
$headers[] = "Content-Type:application/json";
$headers[] = ("Authorization: Bearer " . $accesstoken);
$headers[] = ("Amazon-Advertising-API-ClientId: ". $client);
$headers[] = ("Amazon-Advertising-API-Scope: " . $API_Scope);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close ($ch);
echo $result;

?>