Modal box validation error

[si123]

If i launch modal and click on save changes it shows required field. Once i close the modal and launch still the "field is required" is showing..I want the "field is required" to close once the modal is closed..

You can see the demo here http://www.bootply.com/60244

However, am using jquery validation engine js not Html5 required field.It's just a sample to show the issue.