I'm trying without success to find a solution for problem in ArcGIS and this is the reason that I'm sending this message.
I have one polygon shapefile with postal codes for South Africa (no Gap, no overlap). There are some small polygons that seem to be box codes inside big polygons (Street code) and I would like to identify or select them. The problem: I don’t have any attribute in the table to make a classification (Box code vs street code).
I'm looking for a tool or a method in ArcGIS to identify polygons inside polygons using just one shapefile.