Hello Vivek,
The
RadMaskedInput controls have a default
ValidationTemplate which can be customized to better fit in your application design. This template is applied through the
Validation.ErrorTemplate attached property:
I attached a sample solution demonstrating how to customize the
ErrorTemplate of the
MaskedNumericInput control to display only a Red border around the control. You can further customize this template to better fit your needs.
Please let us know if you need further assistance.
Kind regards,
Tina Stancheva
the Telerik team