## Union of http://hl7.org/fhir/uv/order-catalog/StructureDefinition/CatalogMessageDefinition and http://hl7.org/fhir/uv/order-catalog/StructureDefinition/CatalogMessageDefinition

This is the set of resources that conform to either of the profiles Message definition for messaging order-catalog content (http://hl7.org/fhir/uv/order-catalog/StructureDefinition/CatalogMessageDefinition) and Message definition for messaging order-catalog content (http://hl7.org/fhir/uv/order-catalog/StructureDefinition/CatalogMessageDefinition). E.g. what you have to deal with if you get resources conforming to one of them

### Structure

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageDefinition | C | 0..* |  | A resource that defines a type of message that can be exchanged between systems Constraints: msd-0
meta | Σ | 0..1 | Meta | Metadata about the resource
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
language |  | 0..1 | code | Language of the resource content Binding: ?? (required): left: A human language.; right: IETF language tag for a human language
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained |  | 0..* | Resource | Contained, inline Resources
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
url | Σ | 0..1 | uri | left: Business Identifier for a given MessageDefinition; right: The cannonical URL for a given MessageDefinition
identifier | Σ | 0..* | Identifier | left: Primary key for the message definition on a given server; right: Business Identifier for a given MessageDefinition
version | Σ | 0..1 | string | Business version of the message definition
name | Σ | 0..1 | string | Name for this message definition (computer friendly)
title | Σ | 0..1 | string | Name for this message definition (human friendly)
replaces | Σ | 0..* | canonical(MessageDefinition) | Takes the place of
status | ?!Σ | 1..1 | code | draft | active | retired | unknown Binding: ?? (required): The lifecycle status of an artifact.
experimental | Σ | 0..1 | boolean | For testing purposes, not real usage
date | Σ | 1..1 | dateTime | Date last changed
publisher | Σ | 0..1 | string | left: Name of the publisher (organization or individual); right: Name of the publisher/steward (organization or individual)
contact | Σ | 0..* | ContactDetail | Contact details for the publisher
description | Σ | 0..1 | markdown | Natural language description of the message definition
useContext | Σ | 0..* | UsageContext | The context that the content is intended to support
jurisdiction | Σ | 0..* | CodeableConcept | Intended jurisdiction for message definition (if applicable) Binding: ?? (extensible): Countries and regions within which this artifact is targeted for use.
purpose | Σ | 0..1 | markdown | Why this message definition is defined
copyright |  | 0..1 | markdown | Use and/or publishing restrictions
base | Σ | 0..1 | canonical(MessageDefinition) | Definition this one is based on
parent | Σ | 0..* | canonical(ActivityDefinition | PlanDefinition) | Protocol/workflow this is part of
event[x] | S Σ | 1..1 | Coding | Event code Binding: ?? (extensible): message events for messages conveying order-catalog content
category | Σ | 0..1 | code | consequence | currency | notification Binding: ?? (required): The impact of the content of a message.
focus | Σ C | 0..* | BackboneElement | Resource(s) that are the subject of the event Constraints: md-1
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
code | Σ | 1..1 | code | Type of resource Binding: ?? (required): One of the resource types defined as part of this version of FHIR.
profile |  | 0..1 | canonical(StructureDefinition) | Profile that must be adhered to by focus
min | Σ | 1..1 | unsignedInt | Minimum number of focuses of this type
max |  | 0..1 | string | Maximum number of focuses of this type
responseRequired | S | 1..1 | code | always | on-error | never | on-success Binding: ?? (required): left: HL7-defined table of codes which identify conditions under which acknowledgments are required to be returned in response to a message.; right: This enables the capability currently available through MSH-16 (Application Level acknowledgement) in HL7 Version 2 to declare at a message definition level whether a response is required or only upon error or success, or never. Example General: always
allowedResponse |  | 0..* | BackboneElement | Responses to this message
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
message |  | 1..1 | canonical(MessageDefinition) | Reference to allowed message definition response
situation |  | 0..1 | markdown | When should this response be used
graph |  | 0..* | canonical(GraphDefinition) | Canonical reference to a GraphDefinition
versionAlgorithm[x] | Σ | 0..1 |  | How to compare versions Binding: ?? (extensible)
versionAlgorithmString |  |  | string |
versionAlgorithmCoding |  |  | Coding |
copyrightLabel |  | 0..1 | string | Copyright holder and year(s)
Documentation for this format