valid
adjective
uk/ˈvælɪd/ usa valid ticket, document, agreement, etc. is legal and can be officially accepted, usually for a particular period of time:
Is this ticket still valid?
A credit card is not usually accepted as a valid form of I.D.
Applicants must be in possession of a valid passport.
valid for 6 months, a year, etc. Permits are valid for a year.
The court decided shareholders had a valid claim against the Chairman for his part in the company's downfall.
IT
valid data or details are accepted by a computer system because they are correct
that can be accepted as being true or reasonable:
The points she made were perfectly valid.
validly
adverb
Make sure that your company documents have been validly signed.