A more thorough explanation:

Definition: A notice that a sum of money has been sent, usually by mail, for goods or services.

Example: When you pay your electricity bill online, you will receive a remittance advice that confirms the amount you paid and the date it was sent.

This definition explains that a remittance advice is a notification that money has been sent for goods or services. The example provided shows how a remittance advice is received when paying bills online. This helps the recipient keep track of payments and ensures that the correct amount has been paid.