Name	Flags	Card.	Type	Description & Constraints
Bundle	N		Resource	Contains a collection of resources + Rule: total only when a search or history + Rule: entry.search only when a search + Rule: entry.request mandatory for batch/transaction/history, otherwise prohibited + Rule: entry.response mandatory for batch-response/transaction-response/history, otherwise prohibited + Rule: FullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId (except in history bundles) + Rule: A document must have an identifier with a system and a value + Rule: A document must have a date + Rule: A document must have a Composition as the first resource + Rule: A message must have a MessageHeader as the first resource Elements defined in Ancestors: id, meta, implicitRules, language
identifier	Σ	0..1	Identifier	Persistent identifier for the bundle
type	Σ	1..1	code	document | message | transaction | transaction-response | batch | batch-response | history | searchset | collection BundleType ( Required)
timestamp	Σ	0..1	instant	When the bundle was assembled
total	Σ I	0..1	unsignedInt	If search, the total number of matches
link	Σ	0..*	BackboneElement	Links related to this Bundle
relation	Σ	1..1	string	See http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1
url	Σ	1..1	uri	Reference details for the link
entry	Σ I	0..*	BackboneElement	Entry in the bundle - will have a resource or information + Rule: must be a resource unless there's a request or response + Rule: fullUrl cannot be a version specific reference This repeating element order: For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type
link	Σ	0..*	see link	Links related to this entry
fullUrl	Σ	0..1	uri	URI for resource (Absolute URL server address or URI for UUID/OID)
resource	Σ	0..1	Resource	A resource in the bundle
search	Σ I	0..1	BackboneElement	Search related information
mode	Σ	0..1	code	match | include | outcome - why this is in the result set SearchEntryMode ( Required)
score	Σ	0..1	decimal	Search ranking (between 0 and 1)
request	Σ I	0..1	BackboneElement	Additional execution information (transaction/batch/history)
method	Σ	1..1	code	GET | HEAD | POST | PUT | DELETE | PATCH HTTPVerb ( Required)
url	Σ	1..1	uri	URL for HTTP equivalent of this entry
ifNoneMatch	Σ	0..1	string	For managing cache currency
ifModifiedSince	Σ	0..1	instant	For managing cache currency
ifMatch	Σ	0..1	string	For managing update contention
ifNoneExist	Σ	0..1	string	For conditional creates
response	Σ I	0..1	BackboneElement	Results of execution (transaction/batch/history)
status	Σ	1..1	string	Status response code (text optional)
location	Σ	0..1	uri	The location (if the operation returns a location)
etag	Σ	0..1	string	The Etag for the resource (if relevant)
lastModified	Σ	0..1	instant	Server's date time modified
outcome	Σ	0..1	Resource	OperationOutcome with hints and warnings (for batch/transaction)
signature	Σ TU	0..1	Signature	Digital Signature
Documentation for this format