Product numbers are unique identifying numbers that are used to keep track of each ClickBank product. When you create a product to add to your account, you select the item number before submission. To locate the item number of a particular product in your account, follow these instructions:
Note: Once your product is reviewed and accepted, you cannot change your item number.
Step 1: Log in to your ClickBank account.
Step 2: Click the Vendor Settings tab.
Step 3: Click the My Products tab.
Step 4: Locate the item number the corresponds to the product in the table. This is your product number.