Which of the following is not the case of 'Delivery of wrong quantity' ?

Section 37 of the Sale of Goods Act, 1930 deals with 'Delivery of wrong quantity', which covers three situations: (1) Short delivery (less than contracted), (2) Excess delivery (more than contracted), and (3) Mixed delivery (goods contracted for mixed with goods of a different description). 'Part delivery' is covered separately under Section 34.