000377 : The Side type option is invalid with an ArcView or ArcEditor license

Description

Buffer's Side type parameter can only be used with an ArcInfo license. Specifying either LEFT or RIGHT will fail with an ArcView or ArcEditor license.

Solution

To use Buffer's Side type parameter, an ArcInfo license is necessary. If using an ArcView or ArcEditor license, you only have the option of setting Side Type to FULL. Learn more about Buffer.