# CHECKOUT301: SKU duplicate

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

Checkout cannot continue because a product SKU is duplicated or invalid.

Change or remove the named SKU, then retry with the preserved cart.

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

Correct the highlighted details, then try again. Retry after making the change above; retrying without it will fail the same way.

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

The order itself is safe and unchanged.

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

* **Code:** `CHECKOUT301` (`SKU_DUPLICATE`)
* **Severity:** error
* **Introduced in:** WCPOS 1.10.0