question

To do it after all items have been created, you can use the code snippet below (this assign a label named SKU, you can of course also set the name of the item)

Table locations = Table("Locations PTP");
for(int row = 1; row <= locations.numRows; row++)
{
    string address = locations[row][1];
    Storage.Slot slot = Storage.system.getSlot(address);
    if(slot)
    {
        for(int i = 1; i <= slot.slotItems.length; i++)
        {
            slot.slotItems[i].item.SKU = locations[row][2];
        }
    }
}

If you want to do it directly when each item is created, I would recommend to first create a Map that links the addresses and SKUs, since it will be much faster than looking up the correct row for each item.

In the attached model I use a global variable to store the map and fill it in the model reset trigger.

20230924-cedis-wl-fm.fsm