Communities are able to load documents against suppliers in the Certificates and Documents Tab.
By default the option Active Documents Only is enabled. When documents are deleted by the Community or the Supplier they will be marked Inactive.
To see these documents untick Active Documents Only.
To view the attachments loaded with a document you can click on the paperclip icon to open the below pop-up. This will allow you to view or download the attachments.
To add a new document to the supplier click the More Actions button in the top right corner and select Add Document.
Here you can enter the Purpose, Valid From Date, Valid To Date, tick Show to Buyers to enable it to be viewed by buyers and any Attachments.