How many marks do we lose if one adjustment spoiled the whole number?

I could be really mischievous here, or simply down-right wicked. I COULD say “You lose everything if your balance sheet doesn’t balance”

But I won’t!

You make 1 mistake you lose 1 mark, maybe 2 and POSSIBLY 3 if it’s an error of principle.

Otherwise, you have to trust the markers’ professionalism to give you the right amount of credit where you have followed correct principles EVEN THOUGH your figures are incorrect