can i subsummary portal records?

[mmonsalveg]

hello, i have an invoice database with a portal.

the portal store all the items by a barcode scanner, so each item/style takes a line of the portal and if i have 10 items same style it will make 10 lines for same item.

my question is , can i make the sales invoice to only shows me one line per item/style? for example those 10 lines with the same product code to one line and acumulate the quantity?

hope you understand me

Thanks for your help