How to add Purchase Order Number in sales invoice in QB?

I'll show you how to add a Purchase Order number on your Invoice, sree921.

To do this, let's add a custom field to the invoice to include your client's purchase order. Here's how:

1. Go to the Gear icon in the upper right corner. 
2. Select Account and Settings under Your Company. 
3. Choose Sales from the left menu.
4. Click Sales form content.
5. In the Custom fields section, enter the Name, such as PO Number. 
6. Check the Internal box if you want to show the field in QuickBooks. Choose Public to show the field on the customer forms.
7. Choose Save.
8. Click Done.

For your visual reference, I've attached a screenshot of the last six steps.

For the detailed instructions, check out Add custom fields to sales forms and purchase orders.

Once done, manually enter the purchase order number in the custom field when creating an invoice. I'd suggest customising the sales form before clicking Save and close or Save and send.

Here's what it looks like after performing the steps above: 

Once you accept the invoice payment, record it from the + New menu. It helps ensure your client's balances are up to date in the program. 

I'll be right here to help if you need further assistance in adding the purchase order number to your invoice. Take care always.