Sage 50 Accounts

I created a Service invoice to an insurance company, which includes a negative line, where the policy holder's excess has to be removed. I now need to create a Credit Note against that invoice but it won't let me because of the negative line. I get this…

When sending a service invoice, we show the deduction of retention on the invoice which goes to a different nominal code to allow us to control the amount outstanding for retentions held. I have just tried to create this but sage will not allow it …