title: Getting Main Product Categories from Amazon Product Advertising API
body: <p>I am trying to get the list of product categories from Amazon using Amazon Product Advertising API.</p>
  
  <p>The below list has all the node Id for each category across all domains.</p>
  
  <p><a href="http://docs.aws.amazon.com/AWSECommerceService/latest/DG/BrowseNodeIDs.html" rel="nofollow">http://docs.aws.amazon.com/AWSECommerceService/latest/DG/BrowseNodeIDs.html</a></p>
  
  <p>I am able to get all sub-nodes by passing a Node Id using the below method. </p>
  
  <p><a href="http://docs.aws.amazon.com/AWSECommerceService/latest/DG/BrowseNodeLookup.html" rel="nofollow">http://docs.aws.amazon.com/AWSECommerceService/latest/DG/BrowseNodeLookup.html</a></p>
  
  <p>But I need to know those list of parent Nodes before that.</p>
  
  <p>How can I get the list of main Nodes for each country separately? Is hardcoding those entire list the only way?</p>