分账退款申请请求

{
    "batchNo": "1000000000001",
    "mchBatchNo": "BAL_BATCH_20250101000001",
    "mchRefundOrderNo": "BAL_REFUND_20250101000001",
    "notifyUrl": "https://example.com/notify/refund",
    "acctInfos": [
        {
            "accOrderNo": "ACC_ORDER_001",
            "amount": 100,
            "description": "余额分账退款"
        }
    ]
}