Stake Refund
A bet settled with odds of 1.0 means that if the bet was placed on an event and it wins, the money is returned to the bettor's account without profit, as odds of 1.0 indicate that the winnings equal the stake.
If a refund occurs on an event within an accumulator, the bet slip remains active, but without this match. This means that the stake on the refunded match is canceled, and the overall odds of the accumulator are recalculated without including this event.