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Specification:

FHIR Core (FHIR)
Raised in Version:

STU3
Work Group:

FHIR Infrastructure
Related Artifact(s):

StructureDefinition
Related Page(s):

ElementDefinition
Grouping:
- Normative-Substantive
Resolution Description:
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Flag these as an error using an invariant:

Avoid /, space, ., #

Flag these as a warning using an invariant, warning the modeller that this logical model may hinder code generation:

must be alphanumeric A-Za-z0-9
- must start with a (lower case) letter a-z
- no spaces, underscores, hyphens
- no special characters or accents
- ...?
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Flag these as an error using an invariant: Avoid /, space, ., # Flag these as a warning using an invariant, warning the modeller that this logical model may hinder code generation: must be alphanumeric A-Za-z0-9 - must start with a (lower case) letter a-z - no spaces, underscores, hyphens - no special characters or accents - ...?
Resolution Vote:
Grahame Grieve/Sean McIlvenna: 6-0-0
Change Category:
Enhancement
Change Impact:
Non-compatible
Applied for Version:

STU3

In case of a logical model, the author defines the element names.

There are some special rules for element names (e.g. to allow code generation), such as:

must be alphanumeric A-Za-z0-9
- must start with a (lower case) letter a-z
- no spaces, underscores, hyphens
- no special characters or accents
- ...?

It would be convenient if FHIR clearly defines these rules and provides an invariant to allow validation.