I know in the Japanese version of the PS4 by default that its:

• X: キャンセル / 戻る [Cancel / Back]
• O: 選択 / 確認 [Select / Confirm]

While in most consoles globally: the X button is used to select or confirm something while the O button is for cancel, basically the sequences are inverted. I know this because I’ve played games on a Japanese PS, even in GTA V (the imputs for either button have been adjusted on that version).