Update outstanding amt based on party
Party mandatory if account is receivable/payable
Fetch advance based on party
Reconciliation splitting logic based on party
diff --git a/erpnext/accounts/doctype/gl_entry/gl_entry.py b/erpnext/accounts/doctype/gl_entry/gl_entry.py
index a5a3079..41a88c1 100644
--- a/erpnext/accounts/doctype/gl_entry/gl_entry.py
+++ b/erpnext/accounts/doctype/gl_entry/gl_entry.py
@@ -27,7 +27,7 @@
 		# Update outstanding amt on against voucher
 		if self.against_voucher_type in ['Journal Voucher', 'Sales Invoice', 'Purchase Invoice'] \
 			and self.against_voucher and update_outstanding == 'Yes':
-				update_outstanding_amt(self.account, self.against_voucher_type,
+				update_outstanding_amt(self.account, self.party_type, self.party, self.against_voucher_type,
 					self.against_voucher)
 
 	def check_mandatory(self):
@@ -36,6 +36,10 @@
 			if not self.get(k):
 				frappe.throw(_("{0} is required").format(self.meta.get_label(k)))
 
+		account_type = frappe.db.get_value("Account", self.account, "account_type")
+		if account_type in ["Receivable", "Payable"] and not (self.party_type and self.party):
+			frappe.throw(_("Party Type and Party is required for Receivable / Payable account {0}").format(self.account))
+
 		# Zero value transaction is not allowed
 		if not (flt(self.debit) or flt(self.credit)):
 			frappe.throw(_("Either debit or credit amount is required for {0}").format(self.account))
@@ -109,12 +113,13 @@
 					and not frozen_accounts_modifier in frappe.user.get_roles():
 				frappe.throw(_("You are not authorized to add or update entries before {0}").format(formatdate(acc_frozen_upto)))
 
-def update_outstanding_amt(account, against_voucher_type, against_voucher, on_cancel=False):
+def update_outstanding_amt(account, party_type, party, against_voucher_type, against_voucher, on_cancel=False):
 	# get final outstanding amt
 	bal = flt(frappe.db.sql("""select sum(ifnull(debit, 0)) - sum(ifnull(credit, 0))
 		from `tabGL Entry`
-		where against_voucher_type=%s and against_voucher=%s and account = %s""",
-		(against_voucher_type, against_voucher, account))[0][0] or 0.0)
+		where against_voucher_type=%s and against_voucher=%s
+		and account = %s and party_type=%s and party=%s""",
+		(against_voucher_type, against_voucher, account, party_type, party))[0][0] or 0.0)
 
 	if against_voucher_type == 'Purchase Invoice':
 		bal = -bal
@@ -122,8 +127,8 @@
 		against_voucher_amount = flt(frappe.db.sql("""
 			select sum(ifnull(debit, 0)) - sum(ifnull(credit, 0))
 			from `tabGL Entry` where voucher_type = 'Journal Voucher' and voucher_no = %s
-			and account = %s and ifnull(against_voucher, '') = ''""",
-			(against_voucher, account))[0][0])
+			and account = %s and party_type=%s and party=%s and ifnull(against_voucher, '') = ''""",
+			(against_voucher, account, party_type, party))[0][0])
 		bal = against_voucher_amount + bal
 		if against_voucher_amount < 0:
 			bal = -bal
diff --git a/erpnext/accounts/doctype/journal_voucher/journal_voucher.py b/erpnext/accounts/doctype/journal_voucher/journal_voucher.py
index 538cdbb..df26c35 100644
--- a/erpnext/accounts/doctype/journal_voucher/journal_voucher.py
+++ b/erpnext/accounts/doctype/journal_voucher/journal_voucher.py
@@ -21,7 +21,7 @@
 		self.clearance_date = None
 
 		super(JournalVoucher, self).validate_date_with_fiscal_year()
-
+		self.validate_party()
 		self.validate_cheque_info()
 		self.validate_entries_for_advance()
 		self.validate_debit_and_credit()
@@ -61,6 +61,13 @@
 		self.make_gl_entries(1)
 		self.update_advance_paid()
 
+	def validate_party(self):
+		for d in self.get("entries"):
+			account_type = frappe.db.get_value("Account", d.account, "account_type")
+			if account_type in ["Receivable", "Payable"] and not (d.party_type and d.party):
+				frappe.throw(_("Row{0}: Party Type and Party is required for Receivable / Payable account {1}").format(d.idx, d.account))
+
+
 	def check_credit_limit(self):
 		customers = list(set([d.party for d in self.get("entries") if d.party_type=="Customer"]))
 		if customers:
@@ -247,6 +254,7 @@
 		for d in self.get('entries'):
 			if d.against_invoice and d.credit:
 				currency = frappe.db.get_value("Sales Invoice", d.against_invoice, "currency")
+
 				r.append(_("{0} against Sales Invoice {1}").format(fmt_money(flt(d.credit), currency = currency), \
 					d.against_invoice))
 
@@ -260,7 +268,7 @@
 					from `tabPurchase Invoice` where name=%s""", d.against_voucher)
 				if bill_no and bill_no[0][0] and bill_no[0][0].lower().strip() \
 						not in ['na', 'not applicable', 'none']:
-					r.append(_('{0} against Bill {1} dated {2}').format(fmt_money(flt(d.debit), bill_no[0][2]), bill_no[0][0],
+					r.append(_('{0} against Bill {1} dated {2}').format(fmt_money(flt(d.debit), currency=bill_no[0][2]), bill_no[0][0],
 						bill_no[0][1] and formatdate(bill_no[0][1].strftime('%Y-%m-%d'))))
 
 			if d.against_purchase_order and d.debit:
@@ -294,7 +302,7 @@
 					self.pay_to_recd_from = frappe.db.get_value(d.party_type, d.party,
 						"customer_name" if d.party_type=="Customer" else "supplier_name")
 			elif frappe.db.get_value("Account", d.account, "account_type") in ["Bank", "Cash"]:
-				self.total_amount = fmt_money(d.debit or d.credit, currency)
+				self.total_amount = fmt_money(d.debit or d.credit, currency=currency)
 				self.total_amount_in_words = money_in_words(self.total_amount, currency)
 
 	def make_gl_entries(self, cancel=0, adv_adj=0):
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 8bc3a5b..6a612a9 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -3,9 +3,7 @@
 
 from __future__ import unicode_literals
 import frappe
-
-
-from frappe.utils import cint, cstr, formatdate, flt
+from frappe.utils import cint, formatdate, flt
 from frappe import msgprint, _, throw
 from erpnext.setup.utils import get_company_currency
 import frappe.defaults
@@ -76,7 +74,7 @@
 		super(PurchaseInvoice, self).set_missing_values(for_validate)
 
 	def get_advances(self):
-		super(PurchaseInvoice, self).get_advances(self.credit_to,
+		super(PurchaseInvoice, self).get_advances(self.credit_to, "Supplier", self.supplier,
 			"Purchase Invoice Advance", "advance_allocation_details", "debit", "purchase_order")
 
 	def check_active_purchase_items(self):
@@ -226,6 +224,8 @@
 					'against_voucher_type' : 'Purchase Invoice',
 					'against_voucher'  : self.name,
 					'account' : self.credit_to,
+					'party_type': 'Supplier',
+					'party': self.supplier,
 					'is_advance' : 'Yes',
 					'dr_or_cr' : 'debit',
 					'unadjusted_amt' : flt(d.advance_amount),
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 615e14c..352dfab 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -202,7 +202,7 @@
 				self.set_taxes("other_charges", "taxes_and_charges")
 
 	def get_advances(self):
-		super(SalesInvoice, self).get_advances(self.debit_to,
+		super(SalesInvoice, self).get_advances(self.debit_to, "Customer", self.customer,
 			"Sales Invoice Advance", "advance_adjustment_details", "credit", "sales_order")
 
 	def get_company_abbr(self):
@@ -225,6 +225,8 @@
 					'against_voucher_type' : 'Sales Invoice',
 					'against_voucher'  : self.name,
 					'account' : self.debit_to,
+					'party_type': 'Customer',
+					'party': self.customer,
 					'is_advance' : 'Yes',
 					'dr_or_cr' : 'credit',
 					'unadjusted_amt' : flt(d.advance_amount),
@@ -455,7 +457,7 @@
 
 			if update_outstanding == "No":
 				from erpnext.accounts.doctype.gl_entry.gl_entry import update_outstanding_amt
-				update_outstanding_amt(self.debit_to, self.doctype, self.name)
+				update_outstanding_amt(self.debit_to, "Customer", self.customer, self.doctype, self.name)
 
 			if repost_future_gle and cint(self.update_stock) \
 				and cint(frappe.defaults.get_global_default("auto_accounting_for_stock")):
diff --git a/erpnext/accounts/general_ledger.py b/erpnext/accounts/general_ledger.py
index cb58abe..38ad733 100644
--- a/erpnext/accounts/general_ledger.py
+++ b/erpnext/accounts/general_ledger.py
@@ -122,5 +122,5 @@
 		validate_expense_against_budget(entry)
 
 		if entry.get("against_voucher") and update_outstanding == 'Yes':
-			update_outstanding_amt(entry["account"], entry.get("against_voucher_type"),
+			update_outstanding_amt(entry["account"], entry.get("party_type"), entry.get("party"), entry.get("against_voucher_type"),
 				entry.get("against_voucher"), on_cancel=True)
diff --git a/erpnext/accounts/utils.py b/erpnext/accounts/utils.py
index 64c62af..9b8b47a 100644
--- a/erpnext/accounts/utils.py
+++ b/erpnext/accounts/utils.py
@@ -152,6 +152,7 @@
 	ret = frappe.db.sql("""
 		select t2.{dr_or_cr} from `tabJournal Voucher` t1, `tabJournal Voucher Detail` t2
 		where t1.name = t2.parent and t2.account = %(account)s
+		and t2.party_type = %(party_type)s and t2.party = %(party)s
 		and ifnull(t2.against_voucher, '')=''
 		and ifnull(t2.against_invoice, '')='' and ifnull(t2.against_jv, '')=''
 		and t1.name = %(voucher_no)s and t2.name = %(voucher_detail_no)s
@@ -180,6 +181,8 @@
 		# new entry with balance amount
 		ch = jv_obj.append("entries")
 		ch.account = d['account']
+		ch.party_type = d["party_type"]
+		ch.party = d["party"]
 		ch.cost_center = cstr(jvd[0][0])
 		ch.balance = flt(jvd[0][1])
 		ch.set(d['dr_or_cr'], flt(d['unadjusted_amt']) - flt(d['allocated_amt']))
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 31f5d39..b76efd8 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -364,6 +364,8 @@
 			'debit': 0,
 			'credit': 0,
 			'is_opening': self.get("is_opening") or "No",
+			'party_type': None,
+			'party': None
 		})
 		gl_dict.update(args)
 		return gl_dict
@@ -374,7 +376,7 @@
 		frappe.db.sql("""delete from `tab%s` where parentfield=%s and parent = %s
 			and ifnull(allocated_amount, 0) = 0""" % (childtype, '%s', '%s'), (parentfield, self.name))
 
-	def get_advances(self, account_head, child_doctype, parentfield, dr_or_cr, against_order_field):
+	def get_advances(self, account_head, party_type, party, child_doctype, parentfield, dr_or_cr, against_order_field):
 		so_list = list(set([d.get(against_order_field) for d in self.get("entries") if d.get(against_order_field)]))
 		cond = ""
 		if so_list:
@@ -386,17 +388,18 @@
 			from
 				`tabJournal Voucher` t1, `tabJournal Voucher Detail` t2
 			where
-				t1.name = t2.parent and t2.account = %s and t2.is_advance = 'Yes' and t1.docstatus = 1
+				t1.name = t2.parent and t2.account = %s
+				and t2.party_type=%s and t2.party=%s
+				and t2.is_advance = 'Yes' and t1.docstatus = 1
 				and ((
 						ifnull(t2.against_voucher, '')  = ''
 						and ifnull(t2.against_invoice, '')  = ''
 						and ifnull(t2.against_jv, '')  = ''
 						and ifnull(t2.against_sales_order, '')  = ''
 						and ifnull(t2.against_purchase_order, '')  = ''
-					) %s)
+				) %s)
 			order by t1.posting_date""" %
-			(dr_or_cr, '%s', cond),
-			tuple([account_head] + so_list), as_dict= True)
+			(dr_or_cr, '%s', '%s', '%s', cond), tuple([account_head, party_type, party] + so_list), as_dict=1)
 
 		self.set(parentfield, [])
 		for d in res: