VERIFIED SOLUTION i
Product Feature: Administration Client
Export of Content Author (CA) enviroment can be taken from CA Admin. The enviroment file is in XML form and has link to XSD. The link in XML is "http://www.g1.com/M1RepositoryDataSet.xsd". However this link is not valid. It does not point to valid XSD file location.
This is defect and has been fixed in latest releases. This has no impact on working of CA.
ResolutionUPDATED: April 12, 2017
Latest releases will have valid XSD link.