Reverse synchronization should be triggered by any Any of these objects should trigger reverse synchronization:
Inventory Source.
Inventory Source Item.
Inventory Stock.
Inventory Stock Sales Channel.
Inventory Source Stock Link.
...
Inventory Source synchronization: add Inventory Source data to the queue.
Inventory Source Item synchronization: run linked Product synchronization (see Scenario 3).
Product synchronization: Inventory Source Item data should be nested into Product data, Inventory Source data should be nested into Inventory Source Item data.
Inventory Stock Sales Channel synchronization: run linked Inventory Stock synchronization (see Scenario 6).
Inventory Source Stock Link synchronization: run linked Inventory Stock synchronization (see Scenario 6).
Inventory Stock synchronization: add Inventory Stock data to the queue. Inventory Stock Sales Channel data and Inventory Source Stock Link should be nested into Inventory Stock data. Website data should be nested into Inventory Stock Sales Channel data. Inventory Source data should be nested into Inventory Source Stock Link data.
For request payload structure and examples, please refer to the corresponding page.