European football's governing body confirmed an error occurred during the initial draw on Monday morning and, therefore, must be redrawn.
They said in a statement: "Following a technical problem with the software of an external service provider that instructs the officials as to which teams are eligible to play each other, a material error occurred in the draw for the UEFA Champions League Round of 16.
"As a result of this, the draw has been declared void and will be entirely redone at 1500 CET."