According to Paypal Adaptive Payment :
For Preapproval request we need a endpoint call (1 , mentioned below) , works ok, but not mobile friendly
End Point 1) https://www.paypal.com/cgi-bin/webscr?cmd=_ap-preapproval&preapprovalkey=value needed to preapproval request.
End Point (Embed Payment) 2) https://www.paypal.com/webapps/adaptivepayment/flow/pay?paykey=value&preapprovalkey=value
This case needed paykey , which is required , but preapproval request dont need paykey , How could i call this 2) end point with just preapproval key Like endpoint 1)
Thanks in Advanced
