Name	Flags	Card.	Type	Description & Constraints
Bundle	Σ I		Resource	Contains a collection of resources + FullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId + A document must have an identifier with a system and a value + entry.request only for some types of bundles + entry.response only for some types of bundles + total only when a search or history + entry.search only when a search 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)
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 + fullUrl cannot be a version specific reference + must be a resource unless there's a request or response
link	Σ	0..*	see link	Links related to this entry
fullUrl	Σ	0..1	uri	Absolute URL for resource (server address, or 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	Transaction Related Information
method	Σ	1..1	code	GET | POST | PUT | DELETE 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 update contention
ifMatch	Σ	0..1	string	For managing update contention
ifNoneExist	Σ	0..1	string	For conditional creates
response	Σ I	0..1	BackboneElement	Transaction Related Information
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	0..1	Signature	Digital Signature
Documentation for this format