Problem : Client pepipure.com.au want need to split payment in to two mode one is for product’s payment and second for Donation, but want to split them in different Paypal account.

Solution : Here on  Webnetcreatives we have full web development solutions. As a result we have implemented parallel payment as a solution for specified problem.

Parallel payments enables buyers to pay multiple merchants on a marketplace in a single Express Checkout session.

PayPal Announces Adaptive Payments, Parallel Payments and Chained Payments Functionality via API

Parallel payments allow a single payment by a sender to be split amongst any number of receivers. With parallel payments the buyer can set up one transaction and the monies will be distributed to many receiver means who having differ Paypal account.

Chained payments allow the sender to send one payment to a specific merchant who can then keep their share and payout the balance to various members of their supply chain.  The example a church gives for chained payments is that of a travel agent.  In this case the buyer would simply send payment to the travel agent and the travel agent could then keep their commission and send the rest of the cash to the hotel, airline and car rental businesses that the customer really bought from.

U can find the detailed explanation on following links

Exploring Parallel Payments with PHP with a Sample Application