Cases and pallets containing items with variable weight must be numbered with a GTIN (Global Trade Item Number) and not with a variable weight number.
A GTIN, as distinct from a variable weight number, is an item number that is globally unique. In other words you can use exactly the same GTIN on a case regardless of which country the item is sold in. The same applies for numbering pallets.
Cases containing items with variable weight should be numbered with a 14-digit GTIN and marked with a GS1-128 barcode. The first digit of the GTIN, i.e. the logistical variant, must always be 9 for a case containing items with variable weight.
For cases containing items with variable weight the GS1-128 barcode must contain both the case GTIN and its weight. In addition it is quite common to include the batch number and a date such as the best before date.
Items for delivery to a delicatessen counter
An item which, for example, is delivered to a delicatessen counter and will not be scanned at the checkout shall not be marked with a variable weight number. These items should be marked in the same way as a case containing items of variable weight.