Advance Care Directive Custodian Record Composition profile has bugs in 2 invariants using FHIRPath 'conformsTo'

[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

In the Advance Care Directive Custodian Record composition profile (composition-acdcr-1), the invariants on the following 2 extensions have faulty FHIRPath expressions, related to the use of 'conformsTo'. The consequence of which is that acceptable content for these elements always fails to be valid against these invariants.

1) Element: Composition.extension:compositionAuthorRole

• key: inv-dh-cmp-04
• Description: A practitioner role shall conform to PractitionerRole with Practitioner with Mandatory Identifier
• FHIRpath expression: Composition.extension('http://hl7.org.au/fhir/StructureDefinition/composition-author-role').resolve().conformsTo('http://ns.electronichealth.net.au/ci/fhir/3.0/StructureDefinition/practitioner-ident-1')

  2) Element: Composition.attester.extension:attesterRelatedParty

• key: inv-dh-cmp-05
• Description: A related party shall conform to RelatedPerson with Mandatory Identifier
• FHIRpath expression: Composition.attester.extension('http://hl7.org.au/fhir/StructureDefinition/attester-related-party').resolve().conformsTo('http://ns.electronichealth.net.au/ci/fhir/3.0/StructureDefinition/relatedperson-ident-1') |

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

The correct (and simplified) FHIRPath is (respectively):

valueReference.reference.resolve().conformsTo('http://ns.electronichealth.net.au/ci/fhir/3.0/StructureDefinition/practitionerrole-withpractitionerident-1')
valueReference.reference.resolve().conformsTo('http://ns.electronichealth.net.au/ci/fhir/3.0/StructureDefinition/relatedperson-ident-1')

Screenshots

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Workarounds

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Additional context

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[RichardTON]

After product owner meeting: agreed changes to invariants and supporting information with PO 1) invariants on attester merged and changed to current style 2) invariant inv-dh-cmp-10 on section deleted 3) invariant inv-dh-cmp-07 on authorRole deleted 4) copyright updated to 2020 5) usage scenarios and implementation guidance updated 6) use 1.1.1 of aubase for dependencyList.version in ig-advancecarerecords-1.json

[RichardTON]

Reviewed changes with PO and sent for review

[RichardTON]

After review made the following changes

1. set implementation guidance to "TBD"
2. corrected some relative paths in invariants
3. corrected description of invariant about profile
4. reordered some invariants
5. added reference invariant to attester.party

[RichardTON]

Merged into master, rebuilt and pushed to GitHub. [adc5db0]