BWY is a code some parts companies use to denote the Mark 3 Mondeo. I guess reading out of a catalougue he couldn't decide if a 2000 Mondeo was Mark 2 or Mark 3 as there was a crossover in 2000. Although with yours being an ST24 it should have given the game away......
For info the Mark 2 Hatch/Saloon is BAP and the estate is BNP
For info the Mark 2 Hatch/Saloon is BAP and the estate is BNP