Composition (Shared Medicines List Authored by Practitioner) has bug in the information-recipient invariant that prohibits a device

[robeastwood-agency]

Prerequisites

• [x] I have verified the problem exists in the available content
• [x] I have searched open and closed issues to make sure it isn't already reported
• [x] I have written a descriptive issue title

The bug

One invariant on the optional extension Composition.extension:informationRecipient has faulty FHIRPath expression. The consequence of which is that unacceptable content for this element is always valid against this invariant.

The affected invariant is:

• inv-dh-cmp-12: An information recipient shall not be a device

With the FHIRath expression:

resolve().where($this is Device).exists().not()

What I expected to happen

Acceptable content for this element shall be valid against these invariants. Unacceptable content for this element shall not be valid against these invariants.

The fix

Verification of this FHIRPath pattern with targeted examples, conclude that the FHIRPath that works is of this pattern:

valueReference.reference.resolve().where($this is Device).exists().not()

Workarounds

Providing a logical reference via identifier rather than a reference to a resource.

[RichardTON]

This issue is accepted as a known issue due to project constraints in accordance with the following requirements:

• this is not a mandatory element;
• there is a functioning workaround
• this content is not expected in the PSML use case

This behavior is accepted as a known issue and documented in the SML FHIR IG via: 2bacc4b#diff-0c3a887c600181a92b738f7c87f57860

[dbojicic-agency]

Later versions of IG Publisher have been updated and the content validation works as expected when correct FHIRPath expressions are provided. As a result inv-dh-cmp-12 FHIRPath expressions has been updated to: valueReference.reference.resolve().where($this is Device).exists().not()