# CHECKOUT999: Checkout unexpected

## What this means[​](#what-this-means "What this means으로 직접 링크")

Checkout hit an unexpected problem.

Check the order in your store admin before charging the customer again. Export diagnostics and contact support if the problem repeats.

## What to do[​](#what-to-do "What to do으로 직접 링크")

Check the details below before trying again. WCPOS does not retry this by itself — retry when you are ready.

## Your data[​](#your-data "Your data으로 직접 링크")

The outcome could not be confirmed — verify before retrying. If this persists, export diagnostics and contact WCPOS support.

## Details[​](#details "Details으로 직접 링크")

* **Code:** `CHECKOUT999` (`CHECKOUT_UNEXPECTED`)
* **Severity:** error
* **Introduced in:** WCPOS 1.10.0