> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# API Error Rate, Sendle

> API Error Rate for Sendle stores. Tracked live in Vortex IQ Nerve Centre. How to read it, why it matters, and how to act on it.

**Metrics type:** [Supporting Metrics](/nerve-centre/overview#metrics-types-explained)  •  **Category:** [Operational Health](/nerve-centre/connectors#connectors-by-type)

## At a glance

> Share of calls to the Sendle API that returned an error (HTTP 4xx or 5xx) over the trailing 24 hours. This is the connector-health pulse behind despatch: when the error rate climbs, label creation, order booking and tracking polls start failing, and parcels stop moving. The alert fires above 2 percent, which for a busy despatch desk is the difference between a clean run and a queue of stuck orders.

## What it tracks

The card reads the response status of every request the connector makes to the Sendle API (`POST /api/orders` for booking and labels, `GET /api/orders/{id}/tracking` for scan polls, `GET /api/me` for auth checks) and expresses errors as a percentage of total calls in the window. The `time_window` is `24H`, so it is a rolling-day view that catches incidents fast rather than smoothing them away. The `alert` trips at `>2%`. A 5xx spike points to a Sendle-side outage (cross-check [Sendle Tracking API Unavailable / 5xx](/nerve-centre/kpi-cards/sendle/sendle-tracking-api-unavailable-5xx)); a 401 / 403 cluster points to an invalidated or rotated key (cross-check [Days to Token Expiry](/nerve-centre/kpi-cards/sendle/days-to-token-expiry)); a 422 cluster usually means malformed booking payloads (bad postcodes, missing dimensions) rather than a Sendle fault. The most visible downstream symptom is a drop on [Label Generation Success](/nerve-centre/kpi-cards/sendle/label-generation-success).

## Reconciling against the source

Sendle does not publish a per-merchant API error log in the dashboard, so reconcile against the [Sendle status page](https://status.sendle.com/) for platform-wide incidents and against your own connector logs in Vortex IQ for the request-level detail. A rising error rate with a green status page is almost always an auth or payload issue at your end, not a Sendle outage.

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### Tracked live in Vortex IQ Nerve Centre

*API Error Rate* is one of hundreds of KPI pulses Vortex IQ tracks across Sendle and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English.

[Start for free](https://app.vortexiq.ai/login) or [book a demo](https://www.vortexiq.ai/contact-us) to see this metric running on your own data.