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Business Email : Email address of your business
Notify URL : PayPal Notify URL (example yourServerName/ecommerce/control/payPalNotify" title="Visit page outside Confluence" rel="nofollow"linktype="raw" linktext="

http://[yourServerName]/ecommerce/control/payPalNotify

...

)
Return URL : PayPal Return URL (example

http://

...

[yourServerName

...

]/ecommerce/control/orderhistory

payPalNotify)
Cancel Return URL : PayPal Return On Cancel URL (example yourServerName/ecommerce/control/orderhistorypayPalCancel/main" title="Visit page outside Confluence" rel="nofollow"linktype="raw" linktext="http://yourServerName/ecommerce/control/orderhistory">http://(yourServerName)/ecommerce/control/orderhistory)
Cancel Return URL : PayPal Return On Cancel URL (example yourServerName/payPalCancel/main">yourServerName/ecommerce/control/payPalCancel/main" title="Visit page outside Confluence" rel="nofollow"linktype="raw" linktext="http://(yourServerName)/ecommerce/control/payPalCancel/main">http://yourServerName/ecommerce/control/payPalCancel/main)
Image URL : Image To Use On PayPal (example yourServerName/images/ofbiz_logo.gif" title="Visit page outside Confluence" rel="nofollow"linktype="raw" linktext="http://yourServerName/images/ofbiz_logo.gif">yourServerName/images/ofbiz_logo.gif" title="Visit page outside Confluence" rel="nofollow"linktype="raw" linktext="http://yourServerName/images/ofbiz_logo.gif">http://yourServerName/images/ofbiz_logo.gif)
Confirm Template : Thank-You / Confirm Order Template (example /order/emailconfirmation.ftl)
Redirect URL : PayPal Redirect URL (Sandbox https://www.sandbox.paypal.com/us/cgi-bin/webscr, Production https://www.paypal.com/cgi-bin/webscr)
Confirm URL : PayPal Confirm URL (Sandbox https://www.sandbox.paypal.com/us/cgi-bin/webscr, Production http://www.paypal.com/cgi-bin/webscr)

Once PayPal Payment Gateway has been configurated you have to go to Catalog -> Stores --> select your Store - -> Payments tab

Edit the Payment Method Type Paypal and choose as Payment Gateway Config Id "PayPal Config".

As alternative you can change the configuration parameters into

${ofbiz install dir}/applications/accounting/config/payment.properties

(deprecated use of this property file).
The ones that always need to be changed for use of PayPal are:

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