diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index f27b2c8..394ad49 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -205,14 +205,14 @@
 		if frappe.db.get_value("Buying Settings", None, "po_required") == 'Yes':
 			for d in self.get('items'):
 				if not d.purchase_order:
-					throw(_("Purchase Order number required for Item {0}").format(d.item_code))
+					throw(_("As per the Buying Settings if Purchase Order Required == 'YES', then for creating Purchase Invoice, user need to create Purchase Order first for item {0}").format(d.item_code))
 
 	def pr_required(self):
 		stock_items = self.get_stock_items()
 		if frappe.db.get_value("Buying Settings", None, "pr_required") == 'Yes':
 			for d in self.get('items'):
 				if not d.purchase_receipt and d.item_code in stock_items:
-					throw(_("Purchase Receipt number required for Item {0}").format(d.item_code))
+					throw(_("As per the Buying Settings if Purchase Reciept Required == 'YES', then for creating Purchase Invoice, user need to create Purchase Receipt first for item {0}").format(d.item_code))
 
 	def validate_write_off_account(self):
 		if self.write_off_amount and not self.write_off_account:
diff --git a/erpnext/stock/report/batch_wise_balance_history/batch_wise_balance_history.py b/erpnext/stock/report/batch_wise_balance_history/batch_wise_balance_history.py
index fca91d6..e7cb9ad 100644
--- a/erpnext/stock/report/batch_wise_balance_history/batch_wise_balance_history.py
+++ b/erpnext/stock/report/batch_wise_balance_history/batch_wise_balance_history.py
@@ -23,7 +23,8 @@
 				if qty_dict.opening_qty or qty_dict.in_qty or qty_dict.out_qty or qty_dict.bal_qty:
 					data.append([item, item_map[item]["item_name"], item_map[item]["description"], wh, batch,
 						flt(qty_dict.opening_qty, float_precision), flt(qty_dict.in_qty, float_precision),
-						flt(qty_dict.out_qty, float_precision), flt(qty_dict.bal_qty, float_precision)
+						flt(qty_dict.out_qty, float_precision), flt(qty_dict.bal_qty, float_precision),
+						 item_map[item]["stock_uom"]
 					])
 
 	return columns, data
@@ -33,7 +34,9 @@
 
 	columns = [_("Item") + ":Link/Item:100"] + [_("Item Name") + "::150"] + [_("Description") + "::150"] + \
 	[_("Warehouse") + ":Link/Warehouse:100"] + [_("Batch") + ":Link/Batch:100"] + [_("Opening Qty") + ":Float:90"] + \
-	[_("In Qty") + ":Float:80"] + [_("Out Qty") + ":Float:80"] + [_("Balance Qty") + ":Float:90"]
+	[_("In Qty") + ":Float:80"] + [_("Out Qty") + ":Float:80"] + [_("Balance Qty") + ":Float:90"] + \
+	[_("UOM") + "::90"]
+
 
 	return columns
 
@@ -87,7 +90,7 @@
 
 def get_item_details(filters):
 	item_map = {}
-	for d in frappe.db.sql("select name, item_name, description from tabItem", as_dict=1):
+	for d in frappe.db.sql("select name, item_name, description, stock_uom from tabItem", as_dict=1):
 		item_map.setdefault(d.name, d)
 
 	return item_map