Sun Microsystems Sun Adapter IP HL 7 - Manual (Page 110)

otdHL7_GENERIC_EVT_1,
com.stc.SeeBeyond.OTD_Library.HL7.Generic.HL7_ACK.AC K
otdHL7_ACK_1,com.stc.connectors.jms.JMS otdJMS_JOURNAL,
com.stc.connectors.jms.JMS otdJMS_ERROR) throws Throwable
Note – The above text has been wrapped to fit the page.
Once the message is received, the Collaboration determines whether the message needs to be
validated. The HL7 V2 message is then validated making sure that the message structure is
correct. Various fields in the MSH segment of the message are also validated, such as Version
ID and Sending Facility. If these fields do not match the configuration, a NAK is returned.
If sequence numbering is enabled the Collaboration checks to see if the messages sequence
number is valid. If the sequence number is not valid, the adapter sends a NAK.
The validated HL7 V2 message moves on to processInitialHandshake() and the sequence
numbers are synchronized. The sequence number within the message is checked against the
expected sequence number. If the numbers match, the Collaboration sends an ACK, if not it
sends a NAK. The ACK or NAK includes information from various fields of the incoming MSH
segment. The ACKs level of acknowledgement is set to A (acknowledgement is sent after the
message is successfully processed) or C (acknowledgement is sent when the message is
successfully received).
About TCP/IP HL7 V2 Collaborations
Sun Adapter for TCP/IP HL7 User's Guide • October 2009 110