We rolled the new payment routing version out to 5% of customers. After one day, 20 out of 4,000 transactions failed. The old version's historical failure rate is about 0.2%. The business wants to go to 100% tomorrow. What's your take?

新的支付路由版本先灰度放给 5% 的客户，跑了一天，4,000 笔交易里失败了 20 笔，旧版本历史失败率大约 0.2%。业务方想明天直接放到 100%，你怎么看？