title: "Uploading a new file will override these libraries" message when I upload a zip file to Lambda
body: <p>I am testing a script by uploading a zip file on-to AWS Lambda. </p>
  
  <blockquote>
    <p>This function contains external libraries. Uploading a new file will override these libraries.</p>
  </blockquote>
  
  <p>I read the <a href="http://docs.aws.amazon.com/lambda/latest/dg/nodejs-create-deployment-pkg.html" rel="nofollow noreferrer">Creating a Deployment Package (Node.js)</a> documentation, but I am not able to get a proper understanding.</p>
  
  <p>What am I missing?</p>