Hi friends,
It is possible to validate the content of the custom field before create the issue in onDemand JIRA.
i attached the screen shot.In that the summary field was required if we did not enter the details then it will show the dialog "You must specify the summary of a issue" like that for eg if the custom field accepts the numeric value, in case if we are entered the character but during the creat issue it is indicate "The field accept only the numeric value". It is possible do like that in onDemand JIRA.
Please share your thoughts,
Thanks,
Karthik A.