diff --git a/docs/requirements/Component-CentralUI.md b/docs/requirements/Component-CentralUI.md
index 180ffaa..1a8bb71 100644
--- a/docs/requirements/Component-CentralUI.md
+++ b/docs/requirements/Component-CentralUI.md
@@ -127,6 +127,12 @@ Central cluster only. Sites have no user interface.
 - **Stuck rows are visually badged** — a notification is stuck if it is `Pending` or `Retrying` and older than the configurable stuck-age threshold. Stuck detection is display-only; there is no automated escalation or alerting.
 - All queries are served from the central `Notifications` table — no remote per-site queries are needed, unlike the Parked Message Management page.
 
+### Site Calls (Deployment Role)
+- Monitor cached calls store-and-forwarded from sites — `ExternalSystem.CachedCall()` and `Database.CachedWrite()` operations. Scoped to the `ExternalCall` and `DatabaseWrite` kinds only; notifications keep their separate Notification Outbox page and are not merged here.
+- A **queryable cached-call list** filterable by site, kind, status, and time range. Each row shows the call's timestamp, site, kind, target summary, status badge, retry count, and last error.
+- **Retry** and **Discard** actions are available on `Parked` rows only — `Failed` rows are not actionable, since a permanent failure would simply fail again and its error was already returned synchronously to the calling script. The actions issue central→site commands to the owning site; if the site is offline the UI surfaces a "site unreachable" message.
+- Data is served from the central Site Call Audit component's `SiteCalls` table. The page is **read-mostly** — an eventually-consistent mirror of site state; the site remains the source of truth.
+
 ### Health Monitoring Dashboard (All Roles)
 - Overview of all sites with online/offline status.
 - Per-site detail: active/standby node status, data connection health, script error rates, alarm evaluation error rates, store-and-forward buffer depths.
@@ -155,3 +161,4 @@ Central cluster only. Sites have no user interface.
 - **Configuration Database**: All central data, including audit log data for the audit log viewer. Accessed via `ICentralUiRepository`.
 - **Health Monitoring**: Provides site health data for the dashboard.
 - **Notification Outbox**: Provides notification delivery KPIs and serves the `Notifications` table queries and Retry/Discard actions for the Notification Outbox page.
+- **Site Call Audit**: Serves the `SiteCalls` table queries and relays Retry/Discard actions to sites for the Site Calls page.