Japanese phrase
___までに決定する必要があります。 ___ ma de ni ket tei su ru hitsu yō ga a ri ma su
Meaning
It needs to be decided by ___.
When to use it
States that a decision must be made by a deadline. It is a polite but firm way to set a time limit, common in work and planning.
Example dialogue
会議の日程はいつまでに決めますか？ kai gi no nit tei wa i tsu ma de ni ki me ma su ka
When should we decide the meeting schedule?
金曜日までに決定する必要があります。 kin yō bi ma de ni ket tei su ru hitsu yō ga a ri ma su
It needs to be decided by Friday.