| id | String | No description |
| extension | [Extension] | No description |
| modifierExtension | [Extension] | No description |
| who | Reference | No description |
| onBehalfOf | Reference | No description |
| communicationMethod | CodeableConcept | No description |
| date | date | No description |
| _date | ElementBase | No description |
| sourceIdentityCertificate | String | No description |
| _sourceIdentityCertificate | ElementBase | No description |
| proxyIdentityCertificate | String | No description |
| _proxyIdentityCertificate | ElementBase | No description |
| proxySignature | Signature | No description |
| sourceSignature | Signature | No description |