Invoices config

Go to System → Settings → Checkout

Invoices numbers generated manually by the store owner (administrator) on the order page.

While they are related, they serve different purposes.

Order ID: This is a unique identifier assigned to each customer order when it's placed.
Invoice ID: This is a unique identifier assigned to each invoice generated from a processed order.

Essentially, a sales order is a customer's request to purchase something, while a sales invoice is the bill the company sends to the customer for that purchase. The invoice is created after the order has been processed.

Invoice Start No

Set the initial number for your invoices. This determines the starting point for new invoice numbers.

Invoice Prefix

Choose a prefix for your invoices (e.g., "IN#"). Invoice IDs will start at "IN#1" for each unique prefix.