# CHECKOUT999: Checkout unexpected

## What this means[​](#what-this-means "Direct link to 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 "Direct link to 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 "Direct link to Your data")

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

## Details[​](#details "Direct link to Details")

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