Top "Paypal" questions

For questions about the PayPal API used by software developers to process payments, manage invoices, monitor accounts, etc.

How to enable recurring payments for sandbox account?

How to enable recurring payments for sandbox account? Last time I used sandbox, I enabled it by request on https://…

paypal paypal-sandbox recurring
Change the IPN url on existing subscription

we plan to change the domain name for our service. Therefore we need to update the IPN-url for our existing …

paypal paypal-ipn paypal-subscriptions
How do you troubleshoot an "Internal Error" error from Paypal Website Payments Pro?

I have a billing routine that uses recurring billing profiles in Paypal's Website Payments Pro. This routine successfully creates profiles …

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Can't create app for paypal REST API

I've signed in to the developer website but when I go to the apps page to create my app I …

paypal paypal-sandbox
Android In-App-Purchase, how to check if user have purchased one item

is that OK and safe to set a value in SharedPreference to flag that the user have purchased this item? …

android paypal in-app-purchase paypal-sandbox in-app-billing
PayPal documentation ( REST, Classic : SOAP & NVP ) What to choose ?

I need to develop a payment solution using PayPal APIs. Actually I started the documentation phase ( on http://developers.paypal.…

soap paypal paypal-nvp paypal-rest-sdk
Paypal: trying to pass an amount with a Donation button

I have a Donate button set up for the user to enter the donation amount. I am trying to send …

paypal donations urlvariables
How to get PayPal transaction ID from invoice ID

I work with an e-commerce website that uses a PayPal checkout component written in PHP. For accounting purposes I want …

php api soap paypal payment-processing
PayPal PayFlow Pro with Transparent Redirect - User Authentication Failed Issues / Documentation

I'm having some difficulty integrating - and finding current documentation for - integrating PayPal PayFlow Pro into my website. There …

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