Subscribe to updates for Multiple Payers - TRICARE EAST, TRICARE WEST - ALL - Due to scheduled maintenance all 27X transactions will be unavailable Sunday, June 21st from 3:00:00 PM EDT through 10:00:00 PM EDT Sunday, June 21st. via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Payer Notifications creates or resolves an incident.