term:

Confirmation

confirmation n

1 : the act or process of confirming, assuring, or upholding [seeking of the agreement]
;specif
: the ratification of an executive act by a legislative body [senate of the Supreme Court nominee]
2 : something that confirms: as
a : an express or implied contract by which a person makes a voidable agreement binding
;specif
: a definite expression or written memorandum that verifies or substantiates an agreement previously made orally or informally
b in the civil law of Louisiana
: a declaration whereby a person corrects the parts of an obligation that are null to make them enforceable
c : a conveyance by which valid title to an estate is transferred to a person already in possession or by which an estate is increased