Have a receipt for the payment that was made outside of Bill.com. Attach it as a document to an offline payment in Bill.com.

1. In the left navigation pane, click Payments Out
2. Click the payment to attach the document to
3. Click the more options dots
4. Click Document
5. Click Attach Document
6. Browse for the document on the computer or select a document uploaded to the Inbox
7. Click Add Document