Attention MediSYS clients, ADHP (ImmPRINT) will have an emergency maintenance -temporary web services outage for ImmPRINT production and Pilot (pre-production) tomorrow, Friday April 30th, 2021 from 7:00am –12:00pm CST. During this maintenance window, ADPH requests that you hold all HL7 Immunization messages to ImmPRINT. ADPH will send an all-clear message when the maintenance window is complete.