You can add an attachment to a debit note in Moon Invoice easily by following the steps below.

1. Open the Moon Invoice application on your device or tap on this link.
2. From the main menu on your left, go to Purchases ➜ Debit Notes.
3. Click the ‘+’ icon to create a new debit note, or select an existing one, and then click on the Edit option.
4. Next, select the Attachment option to continue.
5. Finally, click Save to apply the changes.