# CLIENT121: Multi tab limited

## What this means[​](#what-this-means "Directe link naar What this means")

This browser lets only one tab send changes at a time.

You can keep using every tab — they all share the same local data. One tab quietly handles the syncing for all of them.

## What to do[​](#what-to-do "Directe link naar What to do")

You can keep working — WCPOS handles this automatically. Do not retry — the result will not change.

## Your data[​](#your-data "Directe link naar Your data")

No order or product data is affected.

## Details[​](#details "Directe link naar Details")

* **Code:** `CLIENT121` (`MULTI_TAB_LIMITED`)
* **Severity:** warn
* **Introduced in:** WCPOS 1.10.0