127 alpha numeric characters item_name If set value is 1, no shipping address is provided - If set value is 2, shipping will be provided and is required no_shipping
127 alpha numeric characters item_number This will determine the sign up page or language the customer is displayed lc
255 alpha numeric characters custom If set to 1 = GET, if set to 2 = POST for the return variable rm
127 alpha numeric characters, must be unique per transaction invoice Label of Note Field during the check out flow cn
64 alpha numeric characters on0 The URL your customers are returned to after a payment return
200 alpha numeric characters - Requires on0 os0 The URL your customers are directed to if they cancel before paying cancel_return
64 alpha numeric characters - Requires on0 on1 The URL you want your IPN post to go to notify_url
200 alpha numeric characters - Requires on1 os1 The message on the button customers view to know to return to your website cbt
Cost for this item amount Used if you have created a page style in your PayPal Profile page_style
Initial shipping cost for this item shipping Passes image as a header of the page - Recommended to use a secure URL image_url
Additional quantity shipping cost for this item shipping2 If set value is 1, Black background with white text, if set value is null or zero, white background with black text cs
Handling cost for this item handling Used in place of a style page in your PayPal profile, this is the image that will display in the header of the page cpp_header_image
tax amount for this item tax Used in place of style page in PayPal Profile cpp_header_color
Multiplies this value to the value of the amount variable quantity Used in place of style page in PayPal Profile cpp_headerborder_color
The currency you want funds paid in currency_code Used in place of style page in PayPal Profile cpp_payflow_color