Hi Chris,
Thanks for your interest in Essential Edit.
Currently EditControl does not support XML schema validation. However we have considered this as a feature request and will try our very best to implement the same at the earliest. You could track the progress of this feature request at this link below :
http://www.syncfusion.com/support/features/edit/Default.aspx?ToDo=view&questId=1186>Feature Request #1186 - Support for XML Schema Validation in EditControl.
Thanks for your patience.
Regards,
Manohari.R