In accordance to the Sales of Goods Act 1979, it requires the goods to be as described, of satisfactory quality and fit for purpose. In this initial stage, the goods were as described and the customer felt that they would be getting the right product.
Crap! I forgot to get a new scart lead to connect to the TV. I should probably pop down the store tomorrow!
Excuse me, but I'm looking for a particular scart lead which is compatible with my Sony television.
The product was of satisfactory quality when the transaction was conducted so this stage was satisfied.
Sure, follow me and I'll deal with your transaction.
However the product although stated to be compatible, it did not work and therefore, could not be used for the main purpose of the customer. This meant it is not fit for purpose.