Coupa: Commodity codes on requisition lines transferred from punchout catalogs are frequently incorrect. What is the best way to ensure that end users submit punchout requests with commodity codes correctly assigned? $1.$ Use only hosted catalogs to ensure that their commodity codes are correctly assigned. $2.$ Configure a commodity structure that is dictated by suppliers to ensure that their product categories are the same. $3.$ Request that suppliers update their punchout sites with the customer$-$specific commodity structure to ensure the correct code is passed via cXML$.4.$ Complete a mapping of UNSPSC codes to suppliers commodity codes and load this mapping within the Coupa instance.