Welcome to the Community, Apexbee.
 

Once expense receipts are uploaded into your books, their information's pulled and matched with an existing transaction. Afterward, you can review/edit and approve/remove the match.
 

Here's how:

1. Access the Vendor menu, then Receipt Management.
2. On your For Review tab, click the Refresh icon to see receipts.
3. For each record, you can use your small arrow and choose Review.
4. If the receipt matches, press Attach. In the event it's incorrect, pick Remove match.
5. Select OK.

I've included a detailed resource about working with receipts that may come in handy moving forward: Upload receipts to QuickBooks
 

Please feel welcome in sending a reply if there's any questions. Enjoy the rest of your day!