You can upload attachments during customer credit note creation. There are two types:
External attachments: Included in the customer credit email sent to your customers.
Internal attachments: Visible only to users within your organization.
Alternatively, you can add attachments to an existing customer credit note.


Yes, you can see a preview of the attachment by clicking on the attachment after uploading.

Customers can only see external attachments when the customer credit note email is sent to them.
Internal attachments are visible only to users in your organization who have access to the credit note.