703.4.a. Examples: 703.4.a.1. A player submits a battlefield they have already used in the match. 703.4.a.2. A player forgets to restore their deck to a pre-sideboard state for the first game of a match. 703.4.a.3. A player forgets to take their chosen champion from their main deck and place it in the chosen champion zone. 703.4.a.4. A player’s deck is the incorrect deck size. See 402 for more information about deck size. (Examples: A player misplaced a card, a player forgot to shuffle their banished cards back into their deck between games, a player's deck has an extra card or is missing a card due to an effect like Possession from a previous game.) 703.4.a.5. A player has cards in their deck box with their deck that are not part of the registered contents of their decklist. Promotional cards given out as part of the event, tokens, and damaged cards replaced with official proxies are allowed to be stored this way and do not warrant this error. 703.4.a.5.a. At Professional OPL, extra cards stored in the deck box this way upgrades to a [Game Loss].