Choose &lt;b&gt;Enable&lt;/b&gt; to create subscriptions at Paypal when possible. 

Choose &lt;b&gt;Disable&lt;/b&gt; to always create one time payments at Paypal. 

&lt;b&gt;Disabled&lt;/b&gt; is the preferred setting for many because SPBAS already sends invoice reminders and has built in suspension logic for unpaid invoices.

We recommend you choose &lt;b&gt;Disable&lt;/b&gt;.