[
 {
  "creation": "2013-07-22 12:43:40", 
  "docstatus": 0, 
  "modified": "2013-07-22 12:49:32", 
  "modified_by": "Administrator", 
  "owner": "Administrator"
 }, 
 {
  "doctype": "DocType", 
  "istable": 1, 
  "module": "Selling", 
  "name": "__common__"
 }, 
 {
  "doctype": "DocField", 
  "in_list_view": 1, 
  "name": "__common__", 
  "parent": "Customer Discount", 
  "parentfield": "fields", 
  "parenttype": "DocType", 
  "permlevel": 0, 
  "reqd": 1
 }, 
 {
  "doctype": "DocType", 
  "name": "Customer Discount"
 }, 
 {
  "doctype": "DocField", 
  "fieldname": "item_group", 
  "fieldtype": "Link", 
  "label": "Item Group", 
  "options": "Item Group"
 }, 
 {
  "doctype": "DocField", 
  "fieldname": "discount", 
  "fieldtype": "Currency", 
  "label": "Discount (%)"
 }
]