Deductions & credits

Apologies for the vague post. Let me clarify. I filed Delaware State returns and Itemized deductions. I received a mail in the post today from the State of Delaware saying that they were "Missing Federal Schedule A - The amount of $XXX for Itemized deductions is not supported by a copy of your Federal Schedule A". I e-filed and so assumed the Federal Schedule A would be sent as well. I have been given 20 days to respond. I believe the correct thing to do is to send them my copy of Federal Schedule A.

 

Any advice?