Update purchase_order.json
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.json b/erpnext/buying/doctype/purchase_order/purchase_order.json
index b43b738..e776b3e 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.json
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.json
@@ -3196,7 +3196,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2017-02-22 18:20:15.650815", 
+ "modified": "2017-02-28 18:20:15.650815", 
  "modified_by": "Administrator", 
  "module": "Buying", 
  "name": "Purchase Order", 
@@ -3294,4 +3294,4 @@
  "title_field": "title", 
  "track_changes": 0, 
  "track_seen": 0
-}
\ No newline at end of file
+}