How do I find a customer invoice if I don't have the invoice number?

Hi there, userqasouthey.

There are a couple of ways on how you can verify if an invoice is already created or not. 

First, you can use the Advanced Search feature to look for an invoice or any other transactions in QBO. Let me give you the steps on how to do it. Here's how:

1. Click the Magnifying glass icon in the upper-right hand corner, then select Advanced Search.
2. Select Invoices in the first filter, then select Customers in the second line.
3. Choose Contains or Equals in the third filter and select the name of the customer.
4. Click Search. 

The system will look for all invoices that are associated to the name of the customer that you selected.

Second option is to run a Transaction List by Customer report. This will basically give you a list of all transactions that you created for the customer. Here's how:

1. Go to the Reports menu and type in Transaction List by Customer in the Search bar.
2. Click Customise and scroll-down to the Filter section.
3. Check the box for Customer and select the name if the customer. 
4. Click Run report.

Just in case you can't see the invoice, it means that it's not yet created. You can use the steps in this article on how to record it: Create Invoices in QuickBooks Online.

I'd also like to share these articles for additional guidance when managing invoices in QBO:

• Create the Same Invoice for Multiple Customers
• Duplicate an Invoice or an Estimate in QuickBooks Online

The Community is always here if you need anything else.