How to refund a FICA deduction made in Error.

An employee was set up incorrectly and FICA was deducted for the first two payrolls.

This deduction amount must be refunded. I am attempting to do this by Interim.

Process

I enter 1 positive timecard.

I enter 1 negative timecard

Enter Tax Override TT=D  F for Flat amount and the negative amount (refund amount)

Enter the company Portion the same way.

Calculate.

I am not able to generate a refund.

I have tried 'Off Cycle' Computer and Manual Check methods.

This is urgent. I must refund tomorrow.

Any suggestions?