How to add bow for puchase order number on a invoice

I can show you how to add a field for your purchase order number in your invoice, @frank79.

Are you trying to add a row in your invoices for your purchase order number? If so, you can add a custom field for this one. This feature is available if you're subscribed to either QuickBooks Online (QBO) Plus or Essentials. 

Follow the steps below:

1. Go to the + New button and select Invoices.
2. On the window that appears, click the Gear icon (⚙) at the top of the page.
3. Click on the + Add custom field button on the Choose what you use page.
4. On the Add custom field page, provide all the necessary information for this field.
5. Click on Save once you’re done.

Refer to the following article for more information about adding and managing custom fields in QBO: How to add custom fields to sales forms and purchase orders. 

Here’s more information about creating, sending, and receiving invoice payments: Create invoices in QuickBooks Online.

I’m always here if you have additional concerns with your invoices or if you mean something else by leaving a reply below. Take care and have a great rest of the day!