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i am building an app to submit data for a period, which is a month/year. so i have the month and year field in the form.
on submit, i need to validat if the month/year combination has already been...

after 4 years of the start of this thread, it seems this is mission impossible.

i implemented the same list binding to the form, but could you find a way to validate the list on submit. maybe you can shed some light.

thanks