PubpublishDeliver unable to deliver document 61 ver

When using pub:publish:Deliver locally the destination ID (destId) is given of a local TRIGGER id - > PUBLISHING AND SUBSCRIBING work fine with invoking of the SUBSCRIBE trigger for that document.

When using the destId of a remote broker’s trigger id (inside the territory of the publisher) and publishing the document the SUBSCRIBERS TRIGGER is NOT INVOKED.

Please suggest why is the PUBLISH/SUBSCRIBE not working on remote broker although the same concept is working locally. Is there any problem with the destination ID ?