Need advice and answering of some question about withdrawal from a platform

A relative recently tried to withdrawal usdt (trc20) from a platform. The withdrawal failed. She access the system customer service and was informed the balance was frozen.

And when she asked why she cannot withdraw, the response is.

"Dear user, after checking that this account is "according to the International Anti-Money Laundering Catalog Regulations", in order to prevent illegal users from using our platform to conduct illegal money laundering, if you need to make a cash withdrawal, you need to have twice the transaction flow on the same day before you can make a cash withdrawal. . We apologize for the inconvenience caused to you."

So I have some questions.

• what exact does it mean by "need to have twice the transaction flow on the same day before you can make a cash withdrawal"

Is it for example she wants to withdraw 100 usdt, she needs to put 200 usdt with the platform?

-is that common practice?