# CHECKOUT999: Checkout unexpected

## What this means[​](#what-this-means "Collegamento diretto a What this means")

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 "Collegamento diretto a What to do")

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

## Your data[​](#your-data "Collegamento diretto a Your data")

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

## Details[​](#details "Collegamento diretto a Details")

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