The document provides instructions for setting the value set of a dropdown list in a Web Dynpro application using ABAP. It outlines 3 steps: 1) Create the dropdown UI using a key, 2) Map the context, 3) Add left code to the view start. It then provides sample ABAP code to declare variables, read the node info, populate the value set table from a internal table, sort it, and set the attribute value set on the node.