Users can add a PDF attachment while creating a credit note. To add an attachment, you need to follow the below steps.

1. Click on the '+' sign to add a credit note.
2. Clicking on the attachment option, you must select the file you need to add.
3. Click open to add an attachment. 
4. Click on save for creating a credit note with an attachment. 

Note: Attachment supports both PDF and image documents.