Inbound HL7 V2 Collaboration - Part 2

The Collaboration receives the HL7 V2 message from the external using receiveHL7message(). If an exception occurs due to incomplete data, and the adapter fails to read the data within the configured number of retries, the associated recourse action is taken. If the exception is due to no response, the associated recourse action is taken.

If no exception occurs, validateHL7Message() is called, which validates the message to determine whether to ACK or NAK the message. Other helper methods are also called to validate the HL7 V2 message.

If the HL7 V2 message does not pass validation, the Collaboration calls makeNak() and sendHL7Nak() to create and send the NAK to the external. The HL7 V2 message, with the NAK, is archived to the Error Queue. If the number of consecutive NAKs sent surpasses the maximum number of retries, the associated recourse action is taken.

If the HL7 V2 message passes validation, the Collaboration calls makeAck() and sendHL7Ack() to create and send the ACK to the external.

Figure 1–2 Inbound HL7 V2 Collaboration - Part 2