title: Kibana Visualization not showing created fields in Aggregation -> Terms -> Fields
body: <p>I want to create a visualization in kibana which shows the average of different data. I have created the fields which shows in logs and also I did Management -&gt; Index pattern -&gt; Refresh.
  Now when I try to create a graph in visualize -&gt; e.x (bar chart) -&gt; Aggregate -&gt; Terms -&gt; fields does not shows required fields. Please help me to resolve this.</p>