On 26 September 2019, Mickey ordered 200 cups of coffee from Amore cafe to be delivered to Tim and Tim Agency on 28 September. Due to shortage of coffee beans, 180 cups of coffee were delivered on the actual day. Mis Angeliki argues that 200 rather than 180 cups of coffee should be recognised as the sales of the cafe.

Based on the conceptual framework, identify the assumptions or principles that are violated if you were to follow the suggestion of Ms Angeliki