Format For Provisional Patent Match Play Golf - Alternate Shot Format. Opponents Mistakenly Pick Up My Provisional Ball. What Is Ruling?

Match play golf - alternate shot format. Opponents mistakenly pick up my provisional ball. What is ruling? - format for provisional patent

We played match play - Alternate Shot format. Player 1 reduction in the damaged forests. Player 2 has reached the margin, on the road. Player 1 declares that he has found his ball, and collect our adversaries, the preliminary road. However, the player's ball 1 was not lost was his first ball.
We replaced the provisional close to the body as possible, on 3 and play the hole. Was it fair? "Our penalty opponents in a match?