title: Paypal - CHECKOUT.ORDER.APPROVED but no PAYMENT.CAPTURE.COMPLETED
body: <p>I'm using Paypal Orders API (v2) on a website and multiple times there has been an <code>approved order</code> that are missing <code>captures complete</code>.</p>
  <p>I get this event for all orders:</p>
  <pre><code>CHECKOUT.ORDER.APPROVED
  </code></pre>
  <p>But for some orders, this event does not occur:</p>
  <pre><code>PAYMENT.CAPTURE.COMPLETED
  </code></pre>
  <p>How does this happen, is it because a customers credit card got declined?</p>