You may import data classes that were exported earlier or from another environment.
There are a number of standard extensions to the basic data classes provided with the product. You may import these from the installation path at /conf/Classification.
Steps
1. Sign in as a user with at least the Application Administrator capability global role assignment.
2. Go to MANAGE > Data Classes in the banner.
3. Click IMPORT and select From file.
4. Browse for a file and click OK.
The import action will produce a log and will update and merge, reporting on the number of roles affected.