Recording a payment made in error

eic2010

Hi
I am trying to work out how to add a transaction without it being classed as an expense, but ensuring that it shows as a debit so that the accounts tally up.

Basically I was sent a payment in error so I returned this payment to the person. At the moment I have entered this as an uncategorized expense however technically it is not an expense and it is affecting my profit and loss account. How do I record this so that the transaction ties up with my bank balance and shows as a debit but is not recorded as an expense?

Thanks in advance for your help!