# Department in Communication

Local use of the Department mirror: binding subjects and rule audiences.

[Shared definition and source fields](/systems/core/department).

Communication uses a department as a binding subject and as a rule audience. The source column Channel Identifier is a text value maintained in Core; it is not a link to a Channel here and no flow reads it.

## Local usage

| Field | Storage | Current configuration |
| --- | --- | --- |
| Channel Bindings | Linked records | [Channel Binding](/systems/communication/entity-channel-binding); bindings whose subject is this department |
| Notification Rules (Audience) | Linked records | [Notification Rule](/systems/communication/entity-notification-rule); rules that tell this department |
| Tags | Linked records | [Tags (mirror)](/systems/communication/entity-tags); optional labels |

## Maintenance

Correct shared facts in Core and local links in Communication. The table description declares a read-only, one-way copy. Check the sync source view, field mapping and refresh interval in the Airtable sync settings before relying on them.

[Domain boundaries](/systems/communication/architecture) · [All entities](/systems/communication/entities)