operation time made mandatory in bom operations
diff --git a/erpnext/manufacturing/doctype/bom_operation/bom_operation.json b/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
index a3678b5..aedc074 100644
--- a/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
+++ b/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
@@ -60,7 +60,7 @@
    "oldfieldtype": "Currency", 
    "options": "", 
    "permlevel": 0, 
-   "reqd": 0
+   "reqd": 1
   }, 
   {
    "allow_on_submit": 0, 
@@ -77,7 +77,7 @@
  ], 
  "idx": 1, 
  "istable": 1, 
- "modified": "2014-12-23 15:01:54.340605", 
+ "modified": "2015-02-12 17:49:00.126034", 
  "modified_by": "Administrator", 
  "module": "Manufacturing", 
  "name": "BOM Operation",