Can I enter a specific invoice number to search for it? I have more than 2500 invoices to search.

Yes, you can search for a specific invoice number in QuickBooks Online (QBO), Andre.

Use the Search bar to look for your invoices. Just enter the specific invoice number you want to search for. This should filter your results to show only the invoice(s) that match that number. I'll add an image for visual reference. 

On top of that, you can utilize the Advanced transaction search feature to further refine your search by specifying additional criteria. This feature can help you locate invoices effectively.

Here's how you can do it:

1. Hit the Search bar icon.
2. Next, click Advanced transaction search.
   
   
3. From the Transaction type dropdown menu, choose Invoices
4. Choose other necessary filters.
   
   

For future reference on personalizing your invoices or sales transactions, browse this article: Customise invoices, quotes, and sales receipts in QuickBooks Online.

The Community and I will be here whenever you have further concerns with managing your invoices.