The Bulk Update can be used to any object of the data model.
The endpoint to be used use is:
PUT: http://{host}/ws/rest/{Resource name}/bulkUpdate?key={key 1}&key={key 2}&key={key 3}...
passing ,to the specified recourseresource, a list of key that have to be changed by the input body.
The endpoint returns 204 with no content if succeeded.
Bulk Update can also be used with Expressions :
For example
http://platform-dev.dataloy.com/ws/rest/Voyage/bulkUpdate?expression=ballastPort.isCanal=true