Code: ORDER_ALREADY_COMPLETED

Order already completed

What it means

This order was already completed into a sale — it can no longer be modified.

Where it appears

Trying to edit a completed POS order.

Likely causes

A double-click on “complete”, or trying to edit after someone else already closed it.

Safest actions

Open the resulting sale from the Sales page to review it.

Safe to retry

No — read the safest action first