This is a process to group TRADE records (buy and sell) that constitute an Agreement to Sell one product and buy a different product e.g. 'sell' fertiliser to a farmer/co-op and 'buy' the subsequent crop.  The settlement will be executed with a PINVGL procedure that will invoice ALL the TRADEs included in the Agreement i.e. create SI documents for the Sales and separate PIs for the Purchases.