diff --git a/erpnext/__init__.py b/erpnext/__init__.py
index 0090e75..91675a8 100644
--- a/erpnext/__init__.py
+++ b/erpnext/__init__.py
@@ -2,7 +2,7 @@
 from __future__ import unicode_literals
 import frappe
 
-__version__ = '7.2.30'
+__version__ = '7.2.31'
 
 def get_default_company(user=None):
 	'''Get default company for user'''
diff --git a/erpnext/accounts/doctype/asset/asset.py b/erpnext/accounts/doctype/asset/asset.py
index f9a3b2f..aa2768b 100644
--- a/erpnext/accounts/doctype/asset/asset.py
+++ b/erpnext/accounts/doctype/asset/asset.py
@@ -115,8 +115,8 @@
 	def set_accumulated_depreciation(self):
 		accumulated_depreciation = flt(self.opening_accumulated_depreciation)
 		for d in self.get("schedules"):
-			accumulated_depreciation  += flt(d.depreciation_amount)
-			d.accumulated_depreciation_amount = accumulated_depreciation
+			accumulated_depreciation  += flt(d.depreciation_amount, d.precision("depreciation_amount"))
+			d.accumulated_depreciation_amount = flt(accumulated_depreciation, d.precision("accumulated_depreciation_amount"))
 
 	def get_depreciation_amount(self, depreciable_value):
 		if self.depreciation_method in ("Straight Line", "Manual"):
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
index 370bbc9..6ee9e66 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
@@ -209,6 +209,7 @@
 
 cur_frm.cscript.update_stock = function(doc, dt, dn) {
 	hide_fields(doc, dt, dn);
+	this.frm.fields_dict.items.grid.toggle_reqd("item_code", doc.update_stock? true: false)
 }
 
 cur_frm.fields_dict.cash_bank_account.get_query = function(doc) {
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index ae74d62..dd3b4ba 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -157,6 +157,12 @@
 
 		super(PurchaseInvoice, self).validate_warehouse()
 
+
+	def validate_item_code(self):
+		for d in self.get('items'):
+			if not d.item_code:
+				frappe.msgprint(_("Item Code required at Row No {0}").format(d.idx), raise_exception=True)
+
 	def set_expense_account(self, for_validate=False):
 		auto_accounting_for_stock = cint(frappe.defaults.get_global_default("auto_accounting_for_stock"))
 
@@ -165,6 +171,7 @@
 			stock_items = self.get_stock_items()
 
 		if self.update_stock:
+			self.validate_item_code()
 			self.validate_warehouse()
 			warehouse_account = get_warehouse_account()
 
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index fd35d89..ffed5e2 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -325,6 +325,7 @@
 
 cur_frm.cscript.update_stock = function(doc, dt, dn) {
 	cur_frm.cscript.hide_fields(doc, dt, dn);
+	this.frm.fields_dict.items.grid.toggle_reqd("item_code", doc.update_stock? true: false)
 }
 
 cur_frm.cscript['Make Delivery Note'] = function() {
diff --git a/erpnext/accounts/utils.py b/erpnext/accounts/utils.py
index 4827e76..854f302 100644
--- a/erpnext/accounts/utils.py
+++ b/erpnext/accounts/utils.py
@@ -75,8 +75,8 @@
 	if verbose==1: frappe.msgprint(error_msg)
 	raise FiscalYearError, error_msg
 
-def validate_fiscal_year(date, fiscal_year, company, label=_("Date"), doc=None):
-	years = [f[0] for f in get_fiscal_years(date, label=label, company=company)]
+def validate_fiscal_year(date, fiscal_year, company, label="Date", doc=None):
+	years = [f[0] for f in get_fiscal_years(date, label=_(label), company=company)]
 	if fiscal_year not in years:
 		if doc:
 			doc.fiscal_year = years[0]
diff --git a/erpnext/buying/doctype/purchase_common/purchase_common.js b/erpnext/buying/doctype/purchase_common/purchase_common.js
index b2c08fa..6867dd0 100644
--- a/erpnext/buying/doctype/purchase_common/purchase_common.js
+++ b/erpnext/buying/doctype/purchase_common/purchase_common.js
@@ -109,7 +109,7 @@
 
 	qty: function(doc, cdt, cdn) {
 		var item = frappe.get_doc(cdt, cdn);
-		if ((doc.doctype == "Purchase Receipt") || (doc.doctype == "Purchase Invoice" && doc.update_stock)) {
+		if ((doc.doctype == "Purchase Receipt") || (doc.doctype == "Purchase Invoice" && (doc.update_stock || doc.is_return))) {
 			frappe.model.round_floats_in(item, ["qty", "received_qty"]);
 
 			if(!doc.is_return && this.validate_negative_quantity(cdt, cdn, item, ["qty", "received_qty"])){ return }
diff --git a/erpnext/public/js/controllers/transaction.js b/erpnext/public/js/controllers/transaction.js
index 323be56..2bde6f4 100644
--- a/erpnext/public/js/controllers/transaction.js
+++ b/erpnext/public/js/controllers/transaction.js
@@ -1080,5 +1080,4 @@
 
 		return method
 	},
-
 });
\ No newline at end of file