For PWAKEUP signal, it is specified that "If a completer clock is gated independently of the requester clock and PWAKEUP is used to enable the completer clock, there is a possibility that the setup phase of a transfer is missed by the completer"

Like they have specified the scenario but there is not any kind of further information in specification like whether we have to accept such transfers as valid or not? 

Also Why there is no mention of PWAKEUP signal in FSM State even if it is an important signal for APB5 perspective.