Why is there no SMS prompt for Taobao refund on CCB credit card?

I don't think so. CCB has no such refund transaction.

SMS reminder

But you can see it on the bill.

When you check the bill after the bill is settled, the refund transaction is displayed as a negative number. Some transaction descriptions contain the word "refund", while others do not. For example, Alipay refund shows a string of numbers plus Alipay, which is actually the date of refund, which is easy to distinguish.