[
 {
  "owner": "ashwini@webnotestech.com", 
  "docstatus": 0, 
  "creation": "2010-08-08 17:09:36", 
  "modified_by": "Administrator", 
  "modified": "2011-09-15 15:04:45"
 }, 
 {
  "name": "__common__", 
  "parent": "Sales Order-Maintenance Visit", 
  "doctype": "Table Mapper Detail", 
  "parenttype": "DocType Mapper", 
  "validation_logic": "docstatus=1", 
  "parentfield": "table_mapper_details"
 }, 
 {
  "map": "Yes", 
  "name": "__common__", 
  "parent": "Sales Order-Maintenance Visit", 
  "doctype": "Field Mapper Detail", 
  "parenttype": "DocType Mapper", 
  "parentfield": "field_mapper_details"
 }, 
 {
  "name": "__common__", 
  "to_doctype": "Maintenance Visit", 
  "module": "Support", 
  "doctype": "DocType Mapper", 
  "ref_doc_submitted": 1, 
  "from_doctype": "Sales Order"
 }, 
 {
  "name": "Sales Order-Maintenance Visit", 
  "doctype": "DocType Mapper"
 }, 
 {
  "match_id": 0, 
  "to_field": "customer", 
  "doctype": "Field Mapper Detail", 
  "from_field": "customer", 
  "checking_operator": "="
 }, 
 {
  "to_field": "sales_order_no", 
  "doctype": "Field Mapper Detail", 
  "match_id": 0, 
  "from_field": "name"
 }, 
 {
  "to_field": "prevdoc_docname", 
  "doctype": "Field Mapper Detail", 
  "match_id": 1, 
  "from_field": "parent"
 }, 
 {
  "to_field": "prevdoc_doctype", 
  "doctype": "Field Mapper Detail", 
  "match_id": 1, 
  "from_field": "parenttype"
 }, 
 {
  "match_id": 1, 
  "to_field": "maintenance_visit_details", 
  "doctype": "Table Mapper Detail", 
  "from_field": "sales_order_details", 
  "from_table": "Sales Order Item", 
  "to_table": "Maintenance Visit Purpose"
 }, 
 {
  "to_table": "Maintenance Visit", 
  "doctype": "Table Mapper Detail", 
  "match_id": 0, 
  "from_table": "Sales Order"
 }
]