输入参数未知："BillingMode"

【以下的问题经过翻译处理】 我的旧DynamoDB脚本可以正常工作：

{
    "AttributeDefinitions": [
        {
            "AttributeName": "userId",
            "AttributeType": "S"
        }
    ],
    "TableName": "DEV_Users",
    "KeySchema": [
        {
            "AttributeName": "userId",
            "KeyType": "HASH"
        }
    ],
    "ProvisionedThroughput": {
        "ReadCapacityUnits": 1,
        "WriteCapacityUnits": 1
    }
}

我的两次尝试更新此脚本以支持按需工作：

{
    "AttributeDefinitions": [
        {
            "AttributeName": "userId",
            "AttributeType": "S"
        }
    ],
    "TableName": "TEMP_Users",
    "KeySchema": [
        {
            "AttributeName": "userId",
            "KeyType": "HASH"
        }
    ],
    "BillingMode": "PAY_PER_REQUEST"
}

以及

{
    "AttributeDefinitions": [
        {
            "AttributeName": "userId",
            "AttributeType": "S"
        }
    ],
    "TableName": "TEMP_Users",
    "KeySchema": [
        {
            "AttributeName": "userId",
            "KeyType": "HASH"
        }
    ],
    "BillingModeSummary": [
		{
			"BillingMode ": "PAY_PER_REQUEST"
		}
    ]
}

两次尝试都导致：

参数验证失败：
输入中缺少所需参数：“ ProvisionedThroughput”
输入中的未知参数：“BillingMode”，必须是以下之一：AttributeDefinitions，TableName，KeySchema，LocalSecondaryIndexes，GlobalSecondaryIndexes，ProvisionedThroughput，StreamSpecification，SSESpecification

我做错什么了吗？看起来我遵守了create-table CLI的要求吗？ https://docs.aws.amazon.com/cli/latest/reference/dynamodb/create-table.html