To resolve the ERROR #5911: Character Set 'iso-8859-4' not installed, start by checking the MSH-18 field in your HL7 messages, as it may specify iso-8859-4 even if your interface is configured for latin1. Next, adjust the HTTP Operation settings to explicitly enforce latin1 as the character set for consistent encoding.
 

This is a helpful overview! It effectively highlights the strengths of InterSystems IRIS for organizations considering OpenEHR. One point worth expanding could be practical examples or case studies where InterSystems IRIS has successfully integrated OpenEHR with other healthcare standards like HL7 FHIR. Real-world scenarios could offer valuable insights for those evaluating the best approach for their healthcare data solutions.

Hi @Balkis Zaitoun 
Order start date and end date is day when the order was ordered and and end date is just a normal end date when the order has to stop charging

Order executed is when the item is administered or given to patient.

Order status varies on Mutiple options: verified is default when ordered and executed is when its given to patient and discontinued is like deleting from charging against the patient

Its a representation of order priority, eg:, stat, discharge medication etc

Hope this helps