What functionality do you need that is not covered by the community license?

It's a pleasure @Tani Frankel ! Congratulations for your great exercise!
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I think that @Laura Blázquez García is doing something similar to what you are asking for, using the DTLs of IRIS for Health to transform an ORU^R01 message into FHIR resources in a bundle, maybe you can send a message to her. 

Maybe dequeuing state is what you are looking for:

DEQ - Dequeue wait (currently unusued)

Record Map is used to parse rows from CSV files into Objectscript objects, you can use DTLs or by code directly to get the fields from the HL7 message and save into a string variable. Something like:

set myString = request.GetValueAt("PID:3.4.1")

In this case request is an Enslib.HL7.Message variable.

It's not working because the images looks like have been removed: https://containers.intersystems.com/contents

Does the file generated from pandoc (the initial output.pdf) readable?

Well, it really simplifies the task of search and deep dive into hundred of community articles to get a specific piece of code, in my case, how to export SQL Gateway configurations:

https://community.intersystems.com/ask-dc-ai?question_id=251638

Clicking on New button you will close the current open DTL to create a new one.

In this article @Eduard Lebedyuk creates a production monitor to check the inactivities for the different components

You can modify the following code:

If (tDiff > tTimeout) && ((lastActivityReported="") || ($system.SQL.DATEDIFF("s",lastActivityReported,lastActivity)>0)) {
    Set tText = $$$FormatText("InactivityTimeoutAlert: Inactivity timeout of '%1' seconds exceeded for host '%2'", +$fn(tDiff,,0), tHost)
    Do ..SendAlert(##class(Ens.AlertRequest).%New($LB(tHost, tText)))
    Set $$$EnsJobLocal("LastActivity", tHost) = lastActivity
} 

Replacing the SendAlert by:

If (tDiff > tTimeout) && ((lastActivityReported="") || ($system.SQL.DATEDIFF("s",lastActivityReported,lastActivity)>0)) {
    Set tText = $$$FormatText("InactivityTimeoutAlert: Inactivity timeout of '%1' seconds exceeded for host '%2'", +$fn(tDiff,,0), tHost)
    Set tSC = ##class(Ens.Director).EnableConfigItem(tHost,0) 
    Set tSC = ##class(Ens.Director).EnableConfigItem(tHost,1) 
    Set $$$EnsJobLocal("LastActivity", tHost) = lastActivity
}

Have you checked the messages.log file?

Something like this @Jose-Tomas Salvador ?

From the official documentation: 

https://www.hl7.org/fhir/http.html#ccreate

Conditional creations based on external identifier. I'm not sure if it's implemented on IRIS FHIR server.