This page is part of the FHIR Specification (v1.4.0: STU 3 Ballot 3). The current version which supercedes this version is 5.0.0.  For a full list of available versions, see the Directory of published versions  . Page versions: R5 R4B R4 R3 R2
. Page versions: R5 R4B R4 R3 R2

Detailed Descriptions for the elements in the Parameters Resource.
| Parameters | |
| Definition | This special resource type is used to represent an operation request and response (operations.html). It has no other use, and there is no RESTful endpoint associated with it. | 
| Control | 1..1 | 
| Comments | The parameters that may be used are defined by the OperationDefinition resource. | 
| Parameters.parameter | |
| Definition | A parameter passed to or received from the operation. | 
| Control | 0..* | 
| Invariants | Defined on this element inv-1: A parameter must have only one of (value, resource, part) (expression: value xor resource, xpath: exists(f:value) or exists(f:resource) and not(exists(f:value) and exists(f:resource))) | 
| Parameters.parameter.name | |
| Definition | The name of the parameter (reference to the operation definition). | 
| Control | 1..1 | 
| Type | string | 
| Parameters.parameter.value[x] | |
| Definition | If the parameter is a data type. | 
| Control | 0..1 | 
| Type | * | 
| [x] Note | See Choice of Data Types for further information about how to use [x] | 
| Invariants | Affect this element inv-1: A parameter must have only one of (value, resource, part) (expression: value xor resource, xpath: exists(f:value) or exists(f:resource) and not(exists(f:value) and exists(f:resource))) | 
| Parameters.parameter.resource | |
| Definition | If the parameter is a whole resource. | 
| Control | 0..1 | 
| Type | Resource | 
| Invariants | Affect this element inv-1: A parameter must have only one of (value, resource, part) (expression: value xor resource, xpath: exists(f:value) or exists(f:resource) and not(exists(f:value) and exists(f:resource))) | 
| Parameters.parameter.part | |
| Definition | A named part of a parameter. In many implementation context, a set of named parts is known as a "Tuple". | 
| Control | 0..* | 
| Type | See Parameters.parameter | 
| Comments | Only one level of Tuples is allowed. |