The weight of the packaging material should not be added to the weight of the purchased goods, the Metas wrote on Friday.

The net principle applies both to goods that are already packed and to goods that are sold openly, such as fruit, vegetables, meat and cheese.

However, 11.4 percent of purchases from wholesalers were objected to!
https://www.nzz.ch/panorama/aktuelle-themen/verstoesse-gegen-das-nettoprinzip-zu-teurer-offenverkauf-ld.142216

Weighing the goods loose and only then packing them (as Migros recommends for legal reasons) is a bad solution as it is very cumbersome.

Why is there no tare function on the scales for the new veggie bags (= 7g!)?