If a ball might be a player’s ball but cannot be identified as it lies:
If the lifted ball is the player’s ball or another player’s ball, it must be replaced on its original spot (see Rule 14.2).
If the player lifts their ball under this Rule when not reasonably necessary to identify it (except on the putting green where the player may lift under Rule 13.1b), fails to mark the spot of the ball before lifting it or cleans it when not allowed, the player gets one penalty stroke.
Penalty for Playing Ball from a Wrong Place in Breach of Rule 7.3: General Penalty Under Rule 14.7a.