Did you choose "CCB to other banks" for inter-bank transfer? This usually looks like 9:00- 16: 00 from Monday to Friday, but you should be able to accept your request outside this time period, but you won't transfer money until 9:00.

Other transfers are generally prepared for trading.

Of course, you'd better not come to online banking in the middle of the night. It may be that it's time for the system to run the batch, and then your transaction will not be accepted.