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I am not sure if I have understood your question correctly. Do you mean to say that you want to predefine how many submission record a form should accept?
Yes it is possible to achieve your requirement. You can set the "Submission Limit" preferences of form. The following guide should help you: http://www.jotform.com/help/137-How-to-Limit-Submissions-in-a-Form
Hope this helps.
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