Thank you for your quick reply.  I am familiar with that requirement.  However, it goes on to say

"You do not need to submit this NJ-630 application if: 1. You have paid at least 80% of your final tax liability by the original due date; and 2. You have applied for an automatic extension of time to file for federal purposes and you enclose a copy of the federal Application for Automatic Extension (if filed by paper) with the final New Jersey return when filed."

A copy of the 4868 needs to be attached to the NJ-1040.  The Proseries software has a pop up error that instructs the preparer to manually attach the 4868 to the NJ return.  My question is, why can't the Proseries software programmers attach a copy automatically to the NJ return.  The form is already in the tax return, it would save time if the software did the work for the preparer.