## Description

An error was encountered when converting a shapefile to a grid. When converting polygons to a raster, the internal mechanism determines the geometry by intersecting the polygons with lines. It is expected that wherever a line intersects a polygon shape, an even number of intersection points is found. However, in this case, an odd number of intersections was calculated. This may be a result of bad data or an algorithm failure.

## Solution

Make sure the polygon shapefile is valid. You can use Check Geometry to inspect the dataset for problems. If the data is seemingly valid, it might represent a case that cannot be handled by the conversion algorithm. In this case, please contact ESRI Technical Support.