On the forum, we can't see your tax return.
Without the tax return to review it is not possible to tell whether the error found by NJ was
A) on your original NJ-1040.
B) on your amended NJ-1040-X
C) on both returns.
The only reason to file NJ-1040-X is because you found A) to be the case.
Yet you say NJ-1040-X resulted in no change.
If your NJ-1040-X shows zero refund, and zero amount you owe, generally, there is no reason to SUBMIT it.
