What happens if a player is over age?

From the 2027 Australian Championship Regulations (section 7):

• A state team seeking an exemption for an over-age player must apply in writing to Softball Australia's Events Coordinator (or acting). The team manager must have a copy of the approval at the event.
• States verify their players' ages after players complete the online registration form.
• The penalty for a non-approved over-age player taking part is forfeiting every game the player participates in, whether on the diamond or on the bench.