How to change invoice number serial format?

Let me walk you through how to change an invoice serial number, @useralireza-hsms.

I understand that the serial number is important for fast identification. You can manage the format of your serial number by going to the Product/Service information of the item.

Here’s how:

1. In QuickBooks Online, click the Gear icon and choose Products and services.
2. Choose a product you want to format the serial number (SKU). Then, click Edit.
3. Enter the serial number from the SKU field with your desired format.
4. Once done, click Save and close.

You can also find some information in this article about adding inventory products including SKUs in QBO. Instructions are outlined in Step 2 of this article: Add inventory products in QuickBooks Online.

Get back to me if you have other questions. I'm always happy to help you further. Keep safe and have a great rest of the day!