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Ack 

Message 

passed 

validation?

journalMessage()

Sends HL7 and Ack mesaages 

 to JMS Journal Destination

Nak 

Message

Journal 

HL7 message

processAckNakSequenceNumbering()

Calculates the next sequence 

number and stores the number in 

the sequence number file.

YES

YES

YES

NO

NO

NO

Continued

Can result in archiving the 

HL7 messge/with Nak in 
the Error Queue 

Only if sequence numbering 

is enabled 

Calls updateSequenceNumberFile() 

to persist the next sequence 
number in the file

Exit recourse 

action if failed 

to journal

Handle Nak 

Condition.

Take recourse 

action

JMS Message 

consumed 

and committed

Immediate and Deferred Mode of ACK Process — Part 3

About TCP/IP HL7 V3 Collaborations

Sun Adapter for TCP/IP HL7 User's Guide

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