> ## 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.

# Label Generation Success, EasyPost

> Label Generation Success for EasyPost 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 EasyPost label-purchase requests that returned a valid shipping label in the last 24 hours. Every failed label is a parcel that cannot leave the despatch bench: it blocks the order, stalls the picking queue, and pushes the dispatch deadline at risk. This is a despatch-floor health metric, watched hourly during picking shifts. The alert fires at `<98%` because anything below that is already creating a visible backlog at the packing station.

## What it tracks

Label generation success is the proportion of EasyPost label-buy calls that succeeded over the trailing 24 hours, measured against EasyPost's label-purchase endpoint (`POST /v2/shipments/{id}/buy` and the one-call buy flow). A request fails when EasyPost or the underlying carrier rejects it: a malformed or undeliverable address, a parcel exceeding the carrier's weight or dimension limits, a carrier account with incomplete or expired credentials, an out-of-funds postage balance, or a transient carrier API outage. Because EasyPost rate-shops across carriers, a failure on one carrier can sometimes be recovered by failing over to another, so the headline rate reflects net success after any automatic retry or failover. A sustained dip almost always traces to one root cause rather than random noise: most commonly an expired carrier or API credential (see [Days to Token Expiry](/nerve-centre/kpi-cards/easypost/days-to-token-expiry)) or a carrier-side outage that also shows on [API Error Rate](/nerve-centre/kpi-cards/easypost/api-error-rate). The 24-hour window is deliberately short so the despatch team sees a problem inside one shift, not after a day of blocked orders. When this dips, on-time despatch and downstream [On-Time Delivery Rate](/nerve-centre/kpi-cards/easypost/on-time-delivery-rate) are the first things to feel it.

{/* HUMAN_AUTHORED:reconcile */}

**Reconcile** against the [EasyPost Dashboard](https://www.easypost.com/account) Logs view, filtering to label-buy API calls over the last 24 hours and comparing successful responses to errors; expect small differences from sync latency, and remember log timestamps follow EasyPost account time.

***

### Tracked live in Vortex IQ Nerve Centre

*Label Generation Success* is one of hundreds of KPI pulses Vortex IQ tracks across EasyPost 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.