About Rounding Quantity into Packing Instructions

Hi Experts,

I want to pack a Material 123456 into a Box, and then pack all Boxes on a Pallet with a cover.

On one Pallet, I have 4 levels with 6 Boxes on each level, 1 Box contain 2 Materials 123456.

I want to put the cover only if I have 6, 12, 18 or 24 Boxes.

So, I defined following Pack.Instructions:

PI Nr 0001

10 P Box 999999 Qty 1

20 M Material 123456 Qty 2 Minimum Qty 0 Rounding Qty 0

PI Nr 0002

10 P Pallet 800008 Qty 1

20 P Cover 800000 Qty 1

30 I PI 0001 Qty 24 Minimum Qty 0 Rounding Qty 6

When I create the HU into HU02, for 6 pieces (partial qty 2) of Materials 123456, I've got following error:

"Cannot pack, as packing instruction rounding quantity violated"

Any idea?

Regards,

David