4 Shopping Carts / 1 PayPal Account

I have 4 ZenCart Shopping Carts just set up on 4 different domains but just the one PayPal Account / Bank Account.

Will this cause a problem ?

ie when customer goues to PayPal screen and keys in their payment details PayPal then sends them back to one URL so I will need to have a new page set up listing the 4 Carts and giving the customer 4 links to choose which Shopping Cart they want to return to.

Also I should be including the following for each account
set your Instant Payment Notification Preferences URL to:

http://www.yourdomain.com/ipn_main_handler.php

Will any ipn_main_handler.php file work for all 4 carts

That will work fine. Zencart knows what cart to return to, despite the page specified in the configuration.
You do need to choose one company name to display to all customers.

https://www.zen-cart.com/tutorials/index.php?article=229

irishshopper:

I have 4 ZenCart Shopping Carts just set up on 4 different domains but just the one PayPal Account / Bank Account.

Will this cause a problem ?

ie when customer goues to PayPal screen and keys in their payment details PayPal then sends them back to one URL so I will need to have a new page set up listing the 4 Carts and giving the customer 4 links to choose which Shopping Cart they want to return to.

Also I should be including the following for each account
set your Instant Payment Notification Preferences URL to:

http://www.yourdomain.com/ipn_main_handler.php

Will any ipn_main_handler.php file work for all 4 carts

One of the problems we encountered with using several domain names and one company name on Paypal is the charge backs we get from customers who get confused and think they were wrongly charged.

e.g if your company name is CAKE and your domain name is candy.com, chocolate.com. When your customers sees a charge from CAKE, they will think this is not a valid charge and do a charge back.

We have had several cases of that fortunately when the customers were contacted, they contact their credit card company and let the charge through, still, it usually takes weeks before it gets sorted out.