Task

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Reference to ActivityDefinition

A Task should refer to the ActivityDefinition it instantiates. This provides the possibility to search for Tasks that instantiate a specific instance of an ActivityDefinition, which in turn can be found based on its publisherId.

Using the element instantiatesCanonical does not however allow chaining of the search parameters. Therefore this profile contains an extension instantiates which should hold the reference to the instantiated ActivityDefinition.

The element instantiatesCanonical should not be used for this reference. Receivers of a Task instance can ignore any value in the instantiatesCanonical and should look for the referred ActivityDefinition in the instantiates extension.