@Suzq  The first thing I would do is go to the Customer Payment you recorded and see if the 'Deposit To' field contains a bank account, or Undeposited Funds.

If it contains a bank account instead of Undeposited Funds, that would lead to the trouble you are facing.

To my knowledge, you have to have Undeposited Funds available to make a deposit with.

Hello Fishingforanswers,

I forced a deposit slip, and ended up with a double entry so my invoice was in a negative. I checked my register and it showed a double deposit entry. So I deleted both and I am attempting to now create a customer payment.  However I am getting an error saying "A credit for the overpayment will remain on the customers account and it gives me 3 options,

1 Print credit memo

2. click Ok to save the transaction

3. Click cancel to go back to the transaction without saving it.

OH Boy, what have I done? 

Hello Fishingforanswers,

I finally figured it out.   And I did check my undeposited funds $ 0.00.

Thank you for your time.