title: What is the difference between using the pollSCM and the Scan Multibranch Pipeline Triggers in Jenkins?
body: <p>I've been using Jenkins and I've seen a lot of Pipeline examples (declarative ones)  and I've seen some using the <code>pollSCM</code> property in the <code>Jenkinsfile</code> to trigger a build, like this:</p>
  
  <pre><code>triggers {
          pollSCM('H/5 * * * *')
  }
  </code></pre>
  
  <p>However, I've seen this Scan Multibranch Pipeline Triggers option when configuring a Multibranch pipeline. I'm not sure what's the difference between those.</p>
  
  <p>All this problem came to me because I'm facing some cases where two builds are being triggered for the same job, and I thought it was because I have both these options configured. </p>
  
  <p>Can anyone please help me understand this difference?</p>
  
  <p>Thank you!</p>