function GetSalesOrder(externalId) {
	var salesorderSearch = nlapiSearchRecord("salesorder",null,
			[
			 ["type","anyof","SalesOrd"],
			 "AND",
			 ["mainline","is","T"],
			 "AND",
			 ["externalid","anyof",externalId]
			 ],[
new nlobjSearchColumn("tranid",null,null)
]
	);
	return salesorderSearch;
}