An Exact Online webhook is a registration through the Exact Online API by which an application can subscribe to receive messages upon changes in the data. The registration is made using the user credentials and each application can have their own webhook subscriptions. An application can’t see or access webhook subscriptions of other applications on Exact Online.
The actual implementation of trickle loading varies per platform. On Exact Online, webhooks are used to implement trickle loading in Invantive Data Replicator. On the popular Exact Online platforms Invantive Data Replicator offers trickle loading on approximately 30 tables. Most of these Exact Online tables are of transactional nature.
Exact Online webhooks are conceptually different from Exact Online sync APIs.