Ensemble HL7 Version 2 Development Guide - InterSystems ...

Elements of a Routing Production
2.6 HL7 Sequence Manager
An HL7 sequence manager is a business process that accepts incoming HL7 messages from multiple
sources, then forwards the messages to a target configuration item in the order specified by the MSH:13
SequenceNumbers field in the messages.
The sequence manager has the ability to detect duplicate messages and timing gaps between messages.
It also determines when the timing gaps between sequential messages are sufficiently large to indicate
a problem. Its level of sensitivity can be adjusted using its configuration settings.
To build an HL7 sequence manager for use in an HL7 message routing production, you must create
it, configure it, and integrate it into the production. This topic explains each step.
2.6.1 Creating an HL7 Sequence Manager
To create an HL7 sequence manager:
1. Start the Ensemble Management Portal.
2. If the production already contains a similar HL7 sequence manager, you may copy it using the
following sequence of steps:
• Display the configuration diagram on the [Ensemble] > [Productions] page.
• Select the sequence manager in the diagram.
• Click the Copy button. A dialog prompts you to enter a configuration name.
• Enter a unique name and click OK. Your new sequence manager appears in the diagram
• When first created, the copy has the same host class and settings as the original; only the
name is different. Your next step is to configure the copy.
Note:
The Copy button works only within the same production. You cannot copy a sequence
manager from one production to another.
3. To create an entirely new HL7 sequence manager, without copying, use the following sequence
of steps:
• Start the Business Process Wizard in one of the following ways:
- On the [Ensemble] > [Productions] > [Production Model] page, click Add Business Process.
- While viewing the configuration diagram on the [Ensemble] > [Productions] page, do one
of the following:
• Left-click on the diagram background. A row of buttons displays below the diagram.
Click Add Process.
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