I keep on getting a fault of when i set up a new supplier with expense category of repairs of property the computer asks me for a product or service

Hello Dclumley, 

Welcome to the Community page, 

Are you trying to use one in the Chart of account? 

Or are you putting the expense account in the supplier information section where is says default expense account? 

On the expense are you using the category option or the item option on the expense? 

The solution to this problem was the VAT coding of the category of Property Repairs. The VAT coding had been set up as VAT20%  when in fact should have been VAT20%S.

Thank you to all who read my Question.