diff --git a/erpnext/accounts/doctype/account/account.py b/erpnext/accounts/doctype/account/account.py
index cf1748f..1407d5f 100644
--- a/erpnext/accounts/doctype/account/account.py
+++ b/erpnext/accounts/doctype/account/account.py
@@ -95,29 +95,29 @@
 		# ignore validation while creating new compnay or while syncing to child companies
 		if frappe.local.flags.ignore_root_company_validation or self.flags.ignore_root_company_validation:
 			return
-
 		ancestors = get_root_company(self.company)
 		if ancestors:
 			if frappe.get_value("Company", self.company, "allow_account_creation_against_child_company"):
 				return
-
 			if not frappe.db.get_value("Account",
 				{'account_name': self.account_name, 'company': ancestors[0]}, 'name'):
 				frappe.throw(_("Please add the account to root level Company - %s" % ancestors[0]))
 		else:
 			descendants = get_descendants_of('Company', self.company)
 			if not descendants: return
-
 			parent_acc_name_map = {}
 			parent_acc_name, parent_acc_number = frappe.db.get_value('Account', self.parent_account, \
 				["account_name", "account_number"])
-			for d in frappe.db.get_values('Account',
-				{ "company": ["in", descendants], "account_name": parent_acc_name, 
-					"account_number": parent_acc_number },
-				["company", "name"], as_dict=True):
+			filters = { 
+				"company": ["in", descendants],
+				"account_name": parent_acc_name, 
+			}
+			if parent_acc_number:
+				filters["account_number"] = parent_acc_number
+
+			for d in frappe.db.get_values('Account', filters=filters, fieldname=["company", "name"], as_dict=True):
 				parent_acc_name_map[d["company"]] = d["name"]
 			if not parent_acc_name_map: return
-
 			self.create_account_for_child_company(parent_acc_name_map, descendants, parent_acc_name)
 
 	def validate_group_or_ledger(self):
@@ -175,7 +175,6 @@
 				filters["account_number"] = self.account_number
 
 			child_account = frappe.db.get_value("Account", filters, 'name')
-
 			if not child_account:
 				doc = frappe.copy_doc(self)
 				doc.flags.ignore_root_company_validation = True