diff --git a/stock/doctype/item/item.py b/stock/doctype/item/item.py
index e6c277e..ac9f18f 100644
--- a/stock/doctype/item/item.py
+++ b/stock/doctype/item/item.py
@@ -30,8 +30,8 @@
 		
 		self.check_warehouse_is_set_for_stock_item()
 		self.check_stock_uom_with_bin()
-		self.validate_conversion_factor()
 		self.add_default_uom_in_conversion_factor_table()
+		self.validate_conversion_factor()
 		self.valiadte_item_type()
 		self.check_for_active_boms()
 		self.validate_price_lists()
@@ -59,15 +59,20 @@
 			ch = addchild(self.doc, 'uom_conversion_details', 'UOM Conversion Detail', self.doclist)
 			ch.uom = self.doc.stock_uom
 			ch.conversion_factor = 1
+			
+		for d in self.doclist.get({"parentfield": "uom_conversion_details"}):
+			if d.conversion_factor == 1 and d.uom != self.doc.stock_uom:
+				self.doclist.remove(d)
+				
 
 	def check_stock_uom_with_bin(self):
 		if not self.doc.fields.get("__islocal"):
-			bin = webnotes.conn.sql("select stock_uom from `tabBin` where item_code = %s", 
-				self.doc.name)
-			if self.doc.stock_uom and bin and cstr(bin[0][0]) \
-					and cstr(bin[0][0]) != cstr(self.doc.stock_uom):
-				msgprint(_("Please Update Stock UOM with the help of Stock UOM Replace Utility."), 
-					raise_exception=1)
+			bin_uom = webnotes.conn.get_value("Bin", {"item_code": self.doc.name}, "stock_uom")
+			if self.doc.stock_uom and bin_uom and cstr(bin_uom) != cstr(self.doc.stock_uom):
+				webnotes.errprint([self.doc.stock_uom, bin_uom])
+				webnotes.throw(_("Default Unit of Measure can not be changed directly \
+					because you have already made some transaction(s) with another UOM.\n \
+					To change default UOM, use 'UOM Replace Utility' tool under Stock module."))
 	
 	def validate_conversion_factor(self):
 		check_list = []
diff --git a/stock/doctype/stock_uom_replace_utility/stock_uom_replace_utility.py b/stock/doctype/stock_uom_replace_utility/stock_uom_replace_utility.py
index 4e69a37..eff62f6 100644
--- a/stock/doctype/stock_uom_replace_utility/stock_uom_replace_utility.py
+++ b/stock/doctype/stock_uom_replace_utility/stock_uom_replace_utility.py
@@ -8,7 +8,7 @@
 from webnotes.model import db_exists
 from webnotes.model.bean import copy_doclist
 from webnotes.model.code import get_obj
-from webnotes import msgprint
+from webnotes import msgprint, _
 
 sql = webnotes.conn.sql
 
@@ -41,11 +41,11 @@
 			raise Exception
 			
 	def update_item_master(self):
-		# update stock uom in item master
-		sql("update `tabItem` set stock_uom = '%s' where name = '%s' " % (self.doc.new_stock_uom, self.doc.item_code))
+		item_bean = webnotes.bean("Item", self.doc.item_code)
+		item_bean.doc.stock_uom = self.doc.new_stock_uom
+		item_bean.save()
 		
-		# acknowledge user
-		msgprint("New Stock UOM : " + cstr(self.doc.new_stock_uom) + " updated in Item : " + cstr(self.doc.item_code))
+		msgprint(_("Default UOM updated in item ") + self.doc.item_code)
 		
 	def update_bin(self):
 		# update bin
@@ -80,20 +80,14 @@
 
 	# Update Stock UOM							
 	def update_stock_uom(self):
-		# validate mandatory
 		self.validate_mandatory()
 		self.validate_uom_integer_type()
 			
-		# update item master
 		self.update_item_master()
 		
-		# update stock ledger entry
 		self.update_stock_ledger_entry()
 		
-		# update bin
 		self.update_bin()
-
-		get_obj("Item", self.doc.item_code).on_update()
 		
 	def validate_uom_integer_type(self):
 		current_is_integer = webnotes.conn.get_value("UOM", self.doc.current_stock_uom, "must_be_whole_number")