title: How to find table type for a data element?
body: <p>I create a new function modul in abap which should return a list of the data element <code>AGVAL</code>.</p>
  
  <p>AFAIK there are two ways now: </p>
  
  <ol>
  <li>I use an already available table type</li>
  <li>I create a new table type</li>
  </ol>
  
  <p>How to do this kind of introspection? I would like to now if there is already a table type with one column, which is of type AGVAL?</p>