> ## Documentation Index > Fetch the complete documentation index at: https://docs.proprietas.app/llms.txt > Use this file to discover all available pages before exploring further. # The Audit Trail > An immutable record of every change — the product, not an add-on. For an estates team, the audit trail isn't a feature — it's the deliverable. Insurance renewals, ISO 27001, Ofsted, CQC and DSPT all ask the same question: *who changed what, and when?* Proprietas answers it by default. The audit log — every change with actor, time and context, filterable and exportable ## Logged by Default Every write to a compliance, lease, contractor, work-order, financial or membership record produces an **audit event** in the same database transaction as the change itself. If the change is saved, so is its record — they can't come apart. Each event captures: * **Actor** — the user (or the system, for automated jobs like reminders) * **Before** and **after** — snapshots of what changed * **IP** and **user-agent** — the request context * **Subject** — exactly which record was touched The log is **immutable** — events are written once and never edited or deleted. ## What's Covered The audit trail spans the whole product — over a hundred event types — including: * Compliance: certificate uploaded, replaced, regime pack applied * Leases: uploaded, amended, break/review added or removed, deed created * Members: invited, accepted, role changed, join requested / approved / denied * Work orders: created, quoted, tender overridden, payment logged, completed via portal * Billing: subscription started, upgraded, downgraded, payment succeeded / failed * Contractors, properties, rent, documents, and data-rights actions (export, erasure) Even actions taken by contractors through the [portal](/facilities/contractor-portal) — who don't hold full accounts — are attributed and logged. ## In the App The **Audit Log** (under Reports) is a read-only feed with filters for event kind, the record touched, the actor and a date range. It's exportable, so you can hand an inspector or insurer exactly the slice they asked for. Audit history is retained for a minimum of seven years — aligned to insurance and statutory expectations.