Apama Capital Markets Foundation Documentation : Capital Markets Foundation : Legacy Finance Interfaces : Market data package overview : Cardinality rules
Cardinality rules
Cardinality rules for the Legacy Market Data API include the following:
*Consumers can only have one active subscription per destination key
This ensures that the reference count the publisher keeps is correct.
*Each subscription must be paired with an unsubscribe
Any subscription that is sent must be paired with an unsubscription at some point. Note that often this means that a monitor must normally send unsubscribe events from its on die action, if and only if it had active subscriptions.
Copyright © 2013-2017 Software AG, Darmstadt, Germany. (Innovation Release)

Product LogoContact Support   |   Community   |   Feedback