Missing Site Templates while migrating to SharePoint 2013

Issue:The following sites are using templates that are not yet supported after upgrade

Eg:

 http://servername/samples/<sitename> - #0

 http://servername/samples/<sitename> - #1

 http://servername/samples/<sitename> - #2

 http://servername/samples/<sitename> - #3

Solution:

For this we need to check the site templates in both 14 and 15 hive folder.

We need to copy the missing site templates from 14 hive to 15 hive and also we must copy the site template related xml files (in 1033 folder )from 14 hive to 15 hive.