Follow the downlink under a Primary Event to get a collection of secondary events under this Primary Event.
Take note that the collection of secondary events contains a compact version of a Secondary Event, and also that the content is depending on the type of Secondary Event. Use the downlink for each Secondary Event to get details.
Syntax
GET /api/channels/[channel]/playlists/[playlist]/primaryevents/[primary_event]/secondaryeventsRequest
GET /api/channels/test/playlists/continuous/primaryevents/primary_element_1_0_0/secondaryevents HTTP/1.1Response
HTTP/1.1 200 OKContent-Type: application/vizrt.integrationshubv2+xml; type=list <inthub:list xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="inthub:secondaryEventsCompact" xmlns:inthub="http://www.vizrt.com/integrationshub">    <inthub:secondaryEventCompact xsi:type="inthub:pageEventCompact">        <inthub:name>f4e0a087-c6f4-4f40-bca9-a51cdaf43634</inthub:name>        <inthub:refLink rel="self" type="application/vizrt.integrationshubv2+xml; type=secondaryevent" href="http://127.0.0.1:9991/api/channels/test/playlists/continuous/primaryevents/primary_element_1_0_0/secondaryevents/f4e0a087-c6f4-4f40-bca9-a51cdaf43634" />        <inthub:description>The Smashing Pumpkins/Bullet With Butterfly Wings</inthub:description>        <inthub:triggerId />        <inthub:offset>00:00:02.000</inthub:offset>        <inthub:takeCount>0</inthub:takeCount>        <inthub:createdBy>manual</inthub:createdBy>        <inthub:infoIntegrationsHub />        <inthub:loaded>1.00</inthub:loaded>        <inthub:available>1.00</inthub:available>        <inthub:isManuallyEdited>true</inthub:isManuallyEdited>        <inthub:duration>00:00:10.000</inthub:duration>        <inthub:pageId>6000</inthub:pageId>        <inthub:infoPromoServer>[14:08:30]</inthub:infoPromoServer>    </inthub:secondaryEventCompact>    <inthub:secondaryEventCompact xsi:type="inthub:refPageEventCompact">        <inthub:name>1000</inthub:name>        <inthub:refLink rel="self" type="application/vizrt.integrationshubv2+xml; type=secondaryevent" href="http://127.0.0.1:9991/api/channels/test/playlists/continuous/primaryevents/primary_element_1_0_0/secondaryevents/1000" />        <inthub:description>DEFAULT_LOGO</inthub:description>        <inthub:triggerId />        <inthub:offset>00:00:00.000</inthub:offset>        <inthub:takeCount>0</inthub:takeCount>        <inthub:createdBy>schedule</inthub:createdBy>        <inthub:infoIntegrationsHub>[A:14:07:54]</inthub:infoIntegrationsHub>        <inthub:loaded>1.00</inthub:loaded>        <inthub:available>1.00</inthub:available>        <inthub:isManuallyEdited>false</inthub:isManuallyEdited>        <inthub:duration>00:09:07.890</inthub:duration>        <inthub:pageId>1000</inthub:pageId>    </inthub:secondaryEventCompact>    <inthub:secondaryEventCompact xsi:type="inthub:pilotDataElementEventCompact">        <inthub:name>9000</inthub:name>        <inthub:refLink rel="self" type="application/vizrt.integrationshubv2+xml; type=secondaryevent" href="http://127.0.0.1:9991/api/channels/test/playlists/continuous/primaryevents/primary_element_1_0_0/secondaryevents/9000" />        <inthub:description />        <inthub:triggerId />        <inthub:offset>00:00:00.000</inthub:offset>        <inthub:takeCount />        <inthub:createdBy>schedule</inthub:createdBy>        <inthub:infoIntegrationsHub>[A:14:08:28]</inthub:infoIntegrationsHub>        <inthub:loaded />        <inthub:available />        <inthub:isManuallyEdited>false</inthub:isManuallyEdited>        <inthub:duration>00:09:07.890</inthub:duration>        <inthub:pilotDataElementId>9000</inthub:pilotDataElementId>    </inthub:secondaryEventCompact>    <inthub:secondaryEventCompact xsi:type="inthub:actionEventCompact">        <inthub:name>1c720ee7-8481-4d00-aa53-fe577b85bcbb</inthub:name>        <inthub:refLink rel="self" type="application/vizrt.integrationshubv2+xml; type=secondaryevent" href="http://127.0.0.1:9991/api/channels/test/playlists/continuous/primaryevents/primary_element_1_0_0/secondaryevents/1c720ee7-8481-4d00-aa53-fe577b85bcbb" />        <inthub:description>Cleanup</inthub:description>        <inthub:triggerId />        <inthub:offset />        <inthub:takeCount>0</inthub:takeCount>        <inthub:createdBy>manual</inthub:createdBy>        <inthub:infoIntegrationsHub />        <inthub:loaded>1.00</inthub:loaded>        <inthub:available>1.00</inthub:available>        <inthub:isManuallyEdited>false</inthub:isManuallyEdited>        <inthub:actionId>viz_cleanup</inthub:actionId>        <inthub:actionCommand>SCENE CLEANUP</inthub:actionCommand>        <inthub:actionCategory>viz</inthub:actionCategory>    </inthub:secondaryEventCompact>    <inthub:secondaryEventCompact xsi:type="inthub:msgEventCompact">        <inthub:name>secondary_msg_1</inthub:name>        <inthub:refLink rel="self" type="application/vizrt.integrationshubv2+xml; type=secondaryevent" href="http://127.0.0.1:9991/api/channels/test/playlists/continuous/primaryevents/primary_element_1_0_0/secondaryevents/secondary_msg_1" />        <inthub:description>Element with Id '' could not be identified</inthub:description>        <inthub:offset>00:00:10.000</inthub:offset>        <inthub:createdBy>schedule</inthub:createdBy>        <inthub:infoIntegrationsHub>[A:14:55:14]</inthub:infoIntegrationsHub>    </inthub:secondaryEventCompact></inthub:list> Disallowed Actions
This end-point does not allow PUT or DELETE, and will return a 'HTTP/1.1 405 Method Not Allowed'.