Mappings for the messageheader resource.
 | MessageHeader | Message | 
 | identifier | Message.id | 
 | timestamp | ./creationTime[isNormalDatatype()] | 
 | event | ./payload[classCode="CACT" and moodCode="EVN" and isNormalAct()]/code[isNormalDatatype()]/code | 
 | response | ./conveyedAcknowledgement | 
 | identifier | ./acknowledges.id[isNormalDatatype()] | 
 | code | ./typeCode[isNormalDatatype()] | 
 | details | AcknowledgementDetail or Observation[classCode="ALRT" and moodCode="EVN"] | 
 | source | unique(./communicationFunction[typeCode="SND"]) | 
 | name | unique(./entity[determinerCode="INST" and classCode="DEV"]/name[type='ST' and isNormalDatatype()]) | 
 | software | unique(./entity[determinerCode="INST" and classCode="DEV"]/softwareName[isNormalDatatype()]) | 
 | version | (Not supported) | 
 | contact | unique(./entity[determinerCode="INST" and classCode="DEV"]/scopesRole[normalRole() and classCode="CON" and layer[classCode="PSN"]/telecom[isNormalDatatype()]) | 
 | endpoint | ./telecom[isNormalDatatype()] | 
 | destination | ./communicationFunction[typeCode="RCV"] | 
 | name | unique(./entity[determinerCode="INST" and (classCode=("DEV", "PSN", "ORG"]/name[type='ST' and isNormalDatatype()]) | 
 | target | unique(./entity[determinerCode="INST" and (classCode=("DEV", "PSN", "ORG"] | 
 | endpoint | ./telecom | 
 | enterer | unique(./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/participation[typeCode="ENT" and isNormalParticipation]/role[classCode="ASSIGNED" and isNormalRole()]/player[isNormalEntity() and classCode=("DEV", "PSN") and determinerCode="INST"]) | 
 | author | unique(./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/participation[isHighest(priorityCode) and typeCode="AUT" and isNormalParticipation]/role[classCode="ASSIGNED" and isNormalRole()]/player[isNormalEntity() and classCode=("DEV", "PSN") and determinerCode="INST"]) | 
 | receiver | Not directly supported.  Could be shared using attentionLine.value with an appropriate keyWordText | 
 | responsible | unique(./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/participation[isHighest(priorityCode) and typeCode="RESP" and isNormalParticipation]/role[classCode="ASSIGNED" and isNormalRole()]/player[isNormalEntity() and classCode="PSN" and determinerCode="INST"] or ./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/participation[isHighest(priorityCode) and typeCode="RESP" and isNormalParticipation]/role[classCode="ASSIGNED" and isNormalRole()]/scoper[isNormalEntity() and classCode="ORG" and determinerCode="INST"]) | 
 | reason | unique(./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/reasonCode[isNormalDatatype()]) | 
 | data | unique(./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/participation[typeCode="SUBJ" and isNormalParticipation]/role or ./controlAct[classCode="CACT" and classCode="EVN" and isNormalAct()]/outboundRelationship[typeCode="SBJ" and isNormalActRelatoinship]/target) | 
 | MessageHeader | MSH / MSA / ERR | 
 | identifier | MSH-10-message control ID | 
 | timestamp | MSH-7-message date/time | 
 | event | MSH-9.2-message type.trigger event | 
 | response | MSA | 
 | identifier | MSA-2-message control ID | 
 | code | MSA-1-acknowledgment code | 
 | details | ERR | 
 | source |  | 
 | name | MSH-3-sending application | 
 | software | SFT-3-software product name ( +SFT-1-software vendor organization) | 
 | version | SFT-2-software certified version or release number | 
 | contact | (MSH-22?) | 
 | endpoint | MSH-24-sending network address | 
 | destination |  | 
 | name | MSH-5-receiving application | 
 | target |  | 
 | endpoint | MSH-25-receiving network address (or MSH-6-receiving facility by implication) | 
 | enterer | EVN-5-operator ID / ORC-10-entered by / PRT-5-Participation Person:PRT-4-Participation='EP' / ROL where ROL.3 is EP or ORC.10 | 
 | author | ORC-19-action by / PRT-5-Participation Person:PRT-4-Participation='AUT' / ROL where ROL.3 is IP or ORC.12 | 
 | receiver | PRT-5-Participation Person:PRT-4-Participation='WAYR' / PRT-8-Participation Organization:PRT-4-Participation='WAYR' | 
 | responsible | ORC-12-ordering provider / PRT-5-Participation Person:PRT-4-Participation='OP' /
 PRT-8-Participation Organization:PRT-4-Participation='OP'
 / ROL where ROL.3 is RO or ORC.11
 | 
 | reason | EVN.4 / ORC.16 / OBR-31-reason for study / BPO-13-BP indication for use / RXO-20-indication / RXE-27-give indication / RXD-21-indication / RXG-22-indication / RXA-19-indication | 
 | data |  |