fix in import error due to indentation issues in item_grou[
diff --git a/erpnext/setup/doctype/item_group/item_group.py b/erpnext/setup/doctype/item_group/item_group.py
index a3ed364..b43523d 100644
--- a/erpnext/setup/doctype/item_group/item_group.py
+++ b/erpnext/setup/doctype/item_group/item_group.py
@@ -8,11 +8,11 @@
 # 
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
 # GNU General Public License for more details.
 # 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program.	If not, see <http://www.gnu.org/licenses/>.
 
 # Please edit this list and import only required elements
 import webnotes
@@ -34,33 +34,33 @@
 
 
 class DocType:
-  def __init__(self,d,dl):
-    self.doc, self.doclist = d,dl
-    self.nsm_parent_field = 'parent_item_group';
+	def __init__(self,d,dl):
+		self.doc, self.doclist = d,dl
+		self.nsm_parent_field = 'parent_item_group';
 
-  # update Node Set Model
-  def update_nsm_model(self):
-    import webnotes
-    import webnotes.utils.nestedset
-    webnotes.utils.nestedset.update_nsm(self)
+	# update Node Set Model
+	def update_nsm_model(self):
+		import webnotes
+		import webnotes.utils.nestedset
+		webnotes.utils.nestedset.update_nsm(self)
 
-  # ON UPDATE
-  #--------------------------------------
-  def on_update(self):
-    # update nsm
-    self.update_nsm_model()   
+	# ON UPDATE
+	#--------------------------------------
+	def on_update(self):
+		# update nsm
+		self.update_nsm_model()	 
 
-  def validate(self): 
-    if self.doc.lft and self.doc.rgt:
-      res = sql("select name from `tabItem Group` where is_group = 'Yes' and docstatus!= 2 and (rgt > %s or lft < %s) and name ='%s' and name !='%s'"%(self.doc.rgt,self.doc.lft,self.doc.parent_item_group,self.doc.item_group_name))
-      if not res:
-        msgprint("Please enter proper parent item group.") 
-        raise Exception
-    
-    r = sql("select name from `tabItem Group` where name = '%s' and docstatus = 2"%(self.doc.item_group_name))
-    if r:
-      msgprint("'%s' record is trashed. To untrash please go to Setup & click on Trash."%(self.doc.item_group_name))
-      raise Exception
+	def validate(self): 
+		if self.doc.lft and self.doc.rgt:
+			res = sql("select name from `tabItem Group` where is_group = 'Yes' and docstatus!= 2 and (rgt > %s or lft < %s) and name ='%s' and name !='%s'"%(self.doc.rgt,self.doc.lft,self.doc.parent_item_group,self.doc.item_group_name))
+			if not res:
+				msgprint("Please enter proper parent item group.") 
+				raise Exception
+		
+		r = sql("select name from `tabItem Group` where name = '%s' and docstatus = 2"%(self.doc.item_group_name))
+		if r:
+			msgprint("'%s' record is trashed. To untrash please go to Setup & click on Trash."%(self.doc.item_group_name))
+			raise Exception
 	
 	def on_trash(self):
 		ig = sql("select name from `tabItem` where ifnull(item_group, '') = %s", self.doc.name)