702.6. Channeling Too Many Runes [Warning]: A player channels a number of runes greater than they are entitled to under the Core Rules as the result of a limited action.
702.6.a. Errors of this sort are generally public, and all players are expected to be mindful of game state.
702.6.b. Remedies:
702.6.b.1. If the additional runes have been used to pay for actions, rewind if possible. If rewinding is not possible, this is a General Error instead. See 702.15 for more information about General Errors.
702.6.b.2. If the additional runes are caught and no more than a full round cycle has passed, shuffle them appropriately into the rune deck.
702.6.b.3. Otherwise, instruct the players to continue playing.