You need to enter the Encrypted Password for your Admin Area into Monsoon Stone Edge. You can find your encrypted password in the Volusion API section of your store.
Go to Inventory > Volusion API.
In the Generic section, click the Volusion API Interation Help link next to the heading.
From the Instructions for: Export menu at the top of the page, select Stone Edge.
Select the administrator that will be using the integration.
Click the blue bar that says URL with Query String and General Information for Importing and Exporting.
Copy the Encrypted Password out of the URL String you see at the bottom of the page and paste it into the Stone Edge program.