         var dict = [String: Any]()
         
         dict["excise"] = excise
-        dict["type"] = type ?? NSNull()
-        dict["strength"] = strength ?? NSNull()
-        dict["volume"] = volume ?? NSNull()
+        dict["type"] = type ?? ""
+        dict["strength"] = strength ?? 0
+        dict["volume"] = volume ?? 0
         
         return dict
     }

        
        dict["accountId"] = accountId
        dict["quantity"] = quantity
        dict["assortment"] = serialize(entity: assortment, metaOnly: true)
       
        return dict
    }

            dict["uom"] = serialize(entity: uom, metaOnly: false)
        }

        if let alcohol = alcohol?.dictionary() {
            dict["alcohol"] = alcohol
        }
        
        if let buyPrice = buyPrice?.dictionary() {
            dict["buyPrice"] = buyPrice
        }
        
        if let image = image?.dictionary() {
            dict["image"] = image
        }
        
        if let country = country?.dictionary() {
            dict["country"] = country
        }

        
        dict["code"] = code ?? ""
        dict["externalCode"] = externalCode ?? ""
