This actor receives alerts from the Alert Reporter and collects status events related to the dissemination of the alert.
                        

This actor originates the alert (an alarm, either physiological or technical, or an advisory). May also query the Alert Aggregator for the status of the alert.
                        

A system unit that receives and collects audit records from multiple systems.
                        

Consumes audit log messages.
                        

This actor filters audit records that have been received and forwards selected audit records to an Audit Record Repository.

Added to the ATNA profile in Sept 2015 in CP-ITI-872
                        

Consumes information about care services resources.
                        

Supplies information about care services resources.
                        

Consumes the history of care services information.
                        

Supplies the history of care services information.
                        

A clinical data consumer makes use of clinical patient data.
                        

A Clinical Data Sources maintains patient information about vital  signs, problem and allergies, results from diagnostic tests (e.g., Lab, Imaging, or other test results), medications, immunizations or historical or planned visits and procedures.
                        

The Content Consumer Actor views, imports, or performs other processing of content created by a Content Creator Actor.
                        

The Content Creator Actor creates content and transmits to a Content Consumer.
                        

The main role of this actor consists in providing the business logic for status management and other purposes. As a second role it acts as a “relaying role” where certain standard XDS communication is routed through for providing the possibility of applying project-specific business logic on it.
It provides special query-transactions which consuming actors (prescription placer, pharmaceutical adviser or medication dispenser) used for reducing the amount of data flowing to them. They return just “relevant” information for specific purposes (e.g., returning just all “active” prescriptions ready for being validated or dispensed together with all related documents). This actor is usually a system actor without human participation.
                        

The Data Consumer is responsible for initiating a query to a Data Responder for resource information, and receiving the result of the query. 
                        

Accesses documents to extract data elements and create the links to the data elements’ source documents.
                        

The Data Element Provenance Consumer uses the provenance information associated with data elements to access the source information.
                        

A Data Responder is a system that may have information that can be used by a Form Manager in preparation of form data.  It is available to respond to RESTful queries from trusted Form Manager systems.

VRDR Supplement (Dec 2019): The Data Responder is responsible for receiving a query and supplying the corresponding resource information.