### Usage Notes

**Profile specific implementation guidance:**

At least one of the following defined identifier types, known to this profile, **SHALL** be supplied:

* [AU HPI-O](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-hpio.html)
* [AU PAI-O Identifier](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-paioidentifier.html)
* [AU CSP Registration Number](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-cspregistrationnumber.html)
* [AU Australian Business Number](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-australianbusinessnumber.html)
* [AU Australian Company Number](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-australiancompanynumber.html)
* [AU Australian Registered Body Number](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-australianregistredbodynumber.html)
* [AU NATA Accreditation Number](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-nataaccreditationnumber.html)
* [AU Pharmacy Approval Number](https://hl7.org.au/fhir/4.1.0/StructureDefinition-au-pharmacyapprovalnumber.html)
