PA Registry State Model

HL7 Administrative Registry Behavioral Model

Management of a registry can be described as state changes in a Registration Act.

Simplest Registry Management Behavior

The following diagram represents the state transition notification messages currently supporte in HL7 v3:

As of 2010 the HL7 administrative registry domains only include notification messages for the following registration actions:

State Transition	From / To	Business Event
active	null / active	active record added to registry
revise	active / active	active record revised in registry
nullify	normal / nullify	erroneous record in registry nullified
obsolete	normal / obsolete	duplicate record in registry registry replaced by newer record

Registry with verification process

The following diagram imagines a more complex state machine for a registry.

Envision a registry that follows a two step process for adding records to the official registry. Each candidate registration must pass certain business processes such as duplicate checking or credentials verification before it is processed into the official registry. The new, held, cancelled states can represent this:

State Transition	From / To	Business Event
create	null / new	pending record is submited to registry
activate	new / active	pending record satisfied business rules and is added as an active record to the registry
hold	new / held	pending record is pulled back from vetting process for exceptional processing
release	held /new	exceptional processing completed and pending record returned to normal vetting process
cancel	new / cancelled	pending record processing is stopped because the record failed the vetting process
cancel	held / cancelled	pending record rejected during exceptional processing
revise	new / new	pending record is revised

| active | null / active | active record added to registry |- |revise | active / active | active record revised in registry |- |nullify | normal / nullify | erroneous record in registry nullified |- |obsolete | normal / obsolete | duplicate record in registry registry replaced by newer record |}