Hello,
As mentioned in the post -
https://groups.google.com/forum/?hl=en#!topic/dcm4che/wpvvDTIhR4w this is not supported and ideally should be done on HIS/RIS side. Currently the archive supports sending of ADT messages when patient data is modified by UI or by incoming HL7 messages. Refer
https://github.com/dcm4che/dcm4chee-arc-light/issues/568Purpose of HL7 forwarding : A system which is capable of sending HL7 messages only to one system but wants to be able to send the same HL7 messages to multiple receivers then it can make use of the archive's HL7 forwarding feature, wherein archive acts like a gateway. Another purpose of this feature is that in a hospital system where there are multiple systems which act as HL7 receivers and would like to keep the HL7 related data on their side updated, enabling HL7 forwarding comes in handy.