diff --git a/erpnext/manufacturing/doctype/production_order/production_order.json b/erpnext/manufacturing/doctype/production_order/production_order.json
index 59473ad..4463cd0 100644
--- a/erpnext/manufacturing/doctype/production_order/production_order.json
+++ b/erpnext/manufacturing/doctype/production_order/production_order.json
@@ -172,7 +172,8 @@
    "fieldtype": "Datetime", 
    "label": "Planned Start Date", 
    "permlevel": 0, 
-   "precision": ""
+   "precision": "", 
+   "reqd": 1
   }, 
   {
    "fieldname": "planned_end_date", 
@@ -354,8 +355,8 @@
  "icon": "icon-cogs", 
  "idx": 1, 
  "in_create": 0, 
- "is_submittable": 1,
- "modified": "2015-03-10 17:02:28.401930", 
+ "is_submittable": 1, 
+ "modified": "2015-04-01 07:32:38.426624", 
  "modified_by": "Administrator", 
  "module": "Manufacturing", 
  "name": "Production Order", 
diff --git a/erpnext/manufacturing/doctype/production_order/production_order.py b/erpnext/manufacturing/doctype/production_order/production_order.py
index 6818ba9..c8c3f65 100644
--- a/erpnext/manufacturing/doctype/production_order/production_order.py
+++ b/erpnext/manufacturing/doctype/production_order/production_order.py
@@ -201,7 +201,7 @@
 			Planned Start Date. Time logs will be created and remain in Draft mode and must be submitted
 			before manufacturing entry can be made."""
 
-		if not self.operations:
+		if not self.operations and not self.planned_start_date:
 			return
 
 		time_logs = []
@@ -248,6 +248,7 @@
 		self.planned_end_date = self.operations[-1].planned_end_time
 
 		if time_logs:
+			frappe.local.message_log = []
 			frappe.msgprint(_("Time Logs created:") + "\n" + "\n".join(time_logs))
 
 	def set_operation_start_end_time(self, i, d):