diff --git a/selling/doctype/sales_common/sales_common.py b/selling/doctype/sales_common/sales_common.py
index 82acaa1..4f883b2 100644
--- a/selling/doctype/sales_common/sales_common.py
+++ b/selling/doctype/sales_common/sales_common.py
@@ -415,8 +415,8 @@
 							'qty': flt(p.qty),
 							'reserved_qty': (flt(p.qty)/qty)*(reserved_qty),
 							'uom': p.uom,
-							'batch_no': p.batch_no,
-							'serial_no': p.serial_no,
+							'batch_no': cstr(p.batch_no).strip(),
+							'serial_no': cstr(p.serial_no).strip(),
 							'name': d.name
 						})
 			else:
@@ -427,8 +427,8 @@
 					'qty': qty,
 					'reserved_qty': reserved_qty,
 					'uom': d.stock_uom,
-					'batch_no': d.batch_no,
-					'serial_no': d.serial_no,
+					'batch_no': cstr(d.batch_no).strip(),
+					'serial_no': cstr(d.serial_no).strip(),
 					'name': d.name
 				})
 		return il
diff --git a/stock/doctype/purchase_receipt/purchase_receipt.py b/stock/doctype/purchase_receipt/purchase_receipt.py
index 46484e0..5bc0776 100644
--- a/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -154,15 +154,9 @@
 	def scrub_rejected_serial_nos(self):
 		for d in getlist(self.doclist, 'purchase_receipt_details'):
 			if d.rejected_serial_no:
-				d.rejected_serial_no = d.rejected_serial_no.replace(',', '\n')
+				d.rejected_serial_no = cstr(d.rejected_serial_no).strip().replace(',', '\n')
 				d.save()
 
-
-
-	# On Submit
-	# -----------------------------------------------------------------------------------------------------
-
- # Update Stock
 	def update_stock(self, is_submit):
 		pc_obj = get_obj('Purchase Common')
 		self.values = []
@@ -211,9 +205,9 @@
 	# make Stock Entry
 	def make_sl_entry(self, d, wh, qty, in_value, is_submit, rejected = 0):
 		if rejected:
-			serial_no = d.rejected_serial_no
+			serial_no = cstr(d.rejected_serial_no).strip()
 		else:
-			serial_no = d.serial_no
+			serial_no = cstr(d.serial_no).strip()
 
 		self.values.append({
 			'item_code'					: d.fields.has_key('item_code') and d.item_code or d.rm_item_code,
@@ -229,7 +223,7 @@
 			'company'					: self.doc.company,
 			'fiscal_year'				: self.doc.fiscal_year,
 			'is_cancelled'				: (is_submit==1) and 'No' or 'Yes',
-			'batch_no'					: d.batch_no,
+			'batch_no'					: cstr(d.batch_no).strip(),
 			'serial_no'					: serial_no
 			})
 
diff --git a/stock/doctype/stock_entry/stock_entry.py b/stock/doctype/stock_entry/stock_entry.py
index 6d09045..73af2bf 100644
--- a/stock/doctype/stock_entry/stock_entry.py
+++ b/stock/doctype/stock_entry/stock_entry.py
@@ -166,7 +166,7 @@
 				"posting_date": self.doc.posting_date,
 				"posting_time": self.doc.posting_time,
 				"qty": d.s_warehouse and -1*d.transfer_qty or d.transfer_qty,
-				"serial_no": d.serial_no,
+				"serial_no": cstr(d.serial_no).strip(),
 				"bom_no": d.bom_no,
 			})
 			# get actual stock at source warehouse
@@ -257,7 +257,7 @@
 			sl_obj.validate_serial_no_warehouse(self, 'mtn_details')
 		
 		for d in getlist(self.doclist, 'mtn_details'):
-			if d.serial_no:
+			if cstr(d.serial_no).strip():
 				for x in get_valid_serial_nos(d.serial_no):
 					serial_no = x.strip()
 					if d.s_warehouse:
@@ -536,8 +536,8 @@
 			'stock_uom': d.stock_uom,
 			'company': self.doc.company,
 			'is_cancelled': (is_cancelled ==1) and 'Yes' or 'No',
-			'batch_no': d.batch_no,
-			'serial_no': d.serial_no
+			'batch_no': cstr(d.batch_no).strip(),
+			'serial_no': cstr(d.serial_no).strip()
 		})
 	
 	def get_cust_values(self):
diff --git a/stock/doctype/stock_ledger/stock_ledger.py b/stock/doctype/stock_ledger/stock_ledger.py
index 86a8663..9f498d2 100644
--- a/stock/doctype/stock_ledger/stock_ledger.py
+++ b/stock/doctype/stock_ledger/stock_ledger.py
@@ -38,14 +38,14 @@
 		
 		for d in getlist(obj.doclist, table_name):
 			if d.serial_no:
-				d.serial_no = d.serial_no.replace(',', '\n')
+				d.serial_no = cstr(d.serial_no).strip().replace(',', '\n')
 				d.save()
 
 
 	def validate_serial_no_warehouse(self, obj, fname):
 		for d in getlist(obj.doclist, fname):
 			wh = d.warehouse or d.s_warehouse
-			if d.serial_no and wh:
+			if cstr(d.serial_no).strip() and wh:
 				serial_nos = get_valid_serial_nos(d.serial_no)
 				for s in serial_nos:
 					s = s.strip()
@@ -172,7 +172,6 @@
 
 
 	def update_serial_record(self, obj, fname, is_submit = 1, is_incoming = 0):
-		import datetime
 		for d in getlist(obj.doclist, fname):
 			if d.serial_no:
 				serial_nos = get_valid_serial_nos(d.serial_no)
@@ -191,10 +190,12 @@
 				
 	def update_stock(self, values, is_amended = 'No'):
 		for v in values:
-			sle_id, serial_nos = '', ''
+			sle_id, valid_serial_nos = '', ''
 			# get serial nos
-			if v.get("serial_no"):
-				serial_nos = get_valid_serial_nos(v["serial_no"], v['actual_qty'], v['item_code'])
+			if v.get("serial_no", "").strip():
+				valid_serial_nos = get_valid_serial_nos(v["serial_no"], 
+					v['actual_qty'], v['item_code'])
+				v["serial_no"] = valid_serial_nos and "\n".join(valid_serial_nos) or ""
 			
 			# reverse quantities for cancel
 			if v.get('is_cancelled') == 'Yes':