Magento – PayPal Guest Checkout

One thing to do is to make sure that your call to paypal includes SOLUTIONTYPE=Sole as this should be the flag to inform paypal to allow guest checkouts.

1. If this flag is not set then you can investigate the Magento side to see why this is not being set of request,
2. If this is set but set to Mark then your config value is set to not allow guest checkout from the Magento admin config,
3. If this value is set then I would suggest there is a problem on the paypal side of things and would recommend getting in contact with them directly,

I hope this helps you find your issue.

At last i was able to figure out how to do it. Thought to share the answer so someone like me can save the time and spend it for some fruitful purpose :P

So, what i did was

1) I checked for PayPal's API Calls from developer profile. The link for it is PayPal API

To open the credit card option by default you need to pass the API with parameters LANDINGPAGE=Billing.

2) Searched for API calls in Magento for PayPal and found the file Nvp.php at app/code/core/Mage/Paypal/Model/Api/Nvp.php

3) Search for the function callSetExpressCheckout() after $this->_exportLineItems($request); enter the following line $request['LANDINGPAGE'] = 'Billing';

This is all. Now test it using Express Checkout. I haven't yet tested it thorougly. Please add up to the answer if there are any better suggestion for it.