how to do refund paypal amount using URL. we not like to take any username and password from user that why we not expected to use any API.
we are expecting to build URL and user will click on that link and payapl take all refund responsibility and send us IPN message same flow the way donation button works..
we are able to take donation using below url.
iS their any way to build refund url? we not able to found any source to build refund URL can some one help us....