FHIR Tooling Extensions IG, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 0.5.0-SNAPSHOT built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/fhir-tools-ig/ and changes regularly. See the Directory of published versions

• Content
• Detailed Descriptions
• Mappings
• XML
• JSON
• TTL

Extension: Logical Target (Experimental)

Official URL: http://hl7.org/fhir/tools/StructureDefinition/logical-target				Version: 0.5.0-SNAPSHOT
Standards status: Informative			Maturity Level: 2	Computable Name: LogicalTarget
Other Identifiers: OID:2.16.840.1.113883.4.642.40.1.42.32

This extension is used logical models to indicate that this type can be the target of a reference. This indicates that there is a persistence identity and maintenance lifecycle for the type, though there are no requirements for how those are defined.

Context of Use

This extension may be used on the following element(s):

• Element ID: StructureDefinition

Usage info

Usage:

• This Extension is not used by any profiles in this Implementation Guide

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()