# Membership in Tooling

Local use of Membership (mirror) in Tooling and Access.

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

Membership (mirror) is a copy of Core Membership without a table description. Identity Binding links it as Member, and Membership ID travels to Tool Account as Bound Membership ID so automations can find the same membership in another base.

## Local usage

| Field | Storage | Current configuration |
| --- | --- | --- |
| Identity Binding | Linked records | [Identity Binding](/systems/tooling/entity-identity-binding); Multiple-record picker |
| Tags | Linked records | [Tags (mirror)](/systems/tooling/entity-tags); Multiple-record picker |

## Maintenance

Correct shared facts in Core and local links here. A table name or description does not verify sync direction, field mapping or refresh interval.

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