This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions 
17.14.8 Resource RequestOrchestration - Mappings
Mappings for the RequestOrchestration resource (see Mappings to Other Standards for further information & status).
| RequestOrchestration | clinical.general |
| identifier | FiveWs.identifier |
| status | FiveWs.status |
| intent | FiveWs.class |
| priority | FiveWs.grade |
| code | FiveWs.what[x] |
| subject | FiveWs.subject |
| encounter | FiveWs.context |
| authoredOn | FiveWs.recorded |
| author | FiveWs.author |
| reason | FiveWs.why[x] |
| goal | FiveWs.why[x] |
| goal | FiveWs.why[x] |
| participant | FiveWs.actor |
| RequestOrchestration | Request |
| identifier | Request.identifier |
| instantiatesCanonical | Request.instantiatesCanonical |
| instantiatesUri | Request.instantiatesUri |
| basedOn | Request.basedOn |
| replaces | Request.replaces |
| groupIdentifier | Request.groupIdentifier |
| status | Request.status |
| intent | Request.intent |
| priority | Request.priority |
| code | Request.code |
| subject | Request.subject |
| encounter | Request.encounter |
| authoredOn | Request.authoredOn |
| author | Request.requester |
| reason | Request.reason |
| note | Request.note |
| priority | Request.priority |
| code | Request.code |
| documentation | Request.supportingInfo |
| timing[x] | Request.occurrence[x] |
| participant | Request.performer |
| RequestOrchestration | |
| goal | N/A |
| linkId | N/A (to add?) |
| goal | N/A |
| input | N/A (to add?) |
| title | N/A (to add?) |
| requirement | N/A (to add?) |
| relatedData | N/A (to add?) |
| output | N/A (to add?) |
| title | N/A (to add?) |
| requirement | N/A (to add?) |
| relatedData | N/A (to add?) |
| endRelationship | N/A (to add?) |
| location | .participation[typeCode=LOC].role |
| type | .role.classCode |
| typeCanonical | .role.classCode |
| typeReference | .role.classCode |
| role | .role.code |
| function | .role.code |
| actor[x] | .role.code |
| applicabilityBehavior | N/A |
| definition[x] | Act[classCode=ACT; moodCode=DEFN] |
| transform | N/A |
| dynamicValue | N/A |
| path | N/A |
| expression | N/A |