In Salesforce Field Service, users can receive notifications for Service Appointments without explicitly enabling the Notification for Assignment setting in Field Service Mobile Settings.
This behavior is triggered by a custom Flow that automatically sets the assigned service resource to follow the Service Appointment record upon assignment. Once a user follows a Service Appointment, Salesforce's standard Chatter feed notification mechanism delivers updates for all subsequent events on that record — including status changes, updates, and comments.
The notifications originate from the FieldService Feed (feed_on_field_service), which is part of Salesforce's custom notification framework for Field Service. This means the service resource receives timely updates on every event of the Service Appointment, even without the dedicated assignment notification setting being enabled in Field Service Mobile Settings.
For reference documentation on push notifications in Salesforce Field Service, see Field Service Push Notifications.
feed_on_field_service) for all subsequent events on that Service Appointment — including updates, status changes, and comments — without requiring the Notification for Assignment setting to be explicitly enabled in Field Service Mobile Settings.FieldServiceFeedNotification.getMobileNativeMessageWithoutContextInternal, which indicates that the notification originates from the FieldService Feed clump type (feed_on_field_service) and is triggered by a Field Service event (FTC_INSERTED_FIELD_SERVICE).Specifically, custom notifications are enabled within the org, which is confirmed by the log entry here:
FieldServiceFeedNotification.getMobileNativeMessageWithoutContextInternal:
<message: [$_SFDCGDPR_] updated Service Appointment #SA-Dummy on Work Order Line Item #WOLI-Dummy>
<Clump:<clump.type: feed_on_field_service>
<clump.userId: _SFDCGDPR_>
<size:9>
<payloads:<0:<Event: <FieldServiceEventType: FTC_INSERTED_FIELD_SERVICE(db=374)>
AssignedResource field is populated or when the status changes to Scheduled/Assigned).001930080

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