diff --git a/erpnext/accounts/doctype/c_form/c_form.py b/erpnext/accounts/doctype/c_form/c_form.py
index c14990a..2dcf958 100644
--- a/erpnext/accounts/doctype/c_form/c_form.py
+++ b/erpnext/accounts/doctype/c_form/c_form.py
@@ -18,17 +18,17 @@
 					`tabSales Invoice` where name = %s and docstatus = 1""", d.invoice_no)
 
 				if inv and inv[0][0] != 'Yes':
-					frappe.throw("C-form is not applicable for Invoice: {0}".format(d.invoice_no))
+					frappe.throw(_("C-form is not applicable for Invoice: {0}".format(d.invoice_no)))
 
 				elif inv and inv[0][1] and inv[0][1] != self.name:
-					frappe.throw("""Invoice {0} is tagged in another C-form: {1}.
+					frappe.throw(_("""Invoice {0} is tagged in another C-form: {1}.
 						If you want to change C-form no for this invoice,
 						please remove invoice no from the previous c-form and then try again"""\
-						.format(d.invoice_no, inv[0][1]))
+						.format(d.invoice_no, inv[0][1])))
 
 				elif not inv:
-					frappe.throw("Row {0}: Invoice {1} is invalid, it might be cancelled / does not exist. \
-						Please enter a valid Invoice".format(d.idx, d.invoice_no))
+					frappe.throw(_("Row {0}: Invoice {1} is invalid, it might be cancelled / does not exist. \
+						Please enter a valid Invoice".format(d.idx, d.invoice_no)))
 
 	def on_update(self):
 		"""	Update C-Form No on invoices"""
diff --git a/erpnext/accounts/doctype/gl_entry/gl_entry.py b/erpnext/accounts/doctype/gl_entry/gl_entry.py
index 906c131..9505528 100644
--- a/erpnext/accounts/doctype/gl_entry/gl_entry.py
+++ b/erpnext/accounts/doctype/gl_entry/gl_entry.py
@@ -41,7 +41,7 @@
 		mandatory = ['account','remarks','voucher_type','voucher_no','company']
 		for k in mandatory:
 			if not self.get(k):
-				frappe.throw(_("{0} is required").format(self.meta.get_label(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):
diff --git a/erpnext/accounts/doctype/journal_entry/journal_entry.py b/erpnext/accounts/doctype/journal_entry/journal_entry.py
index 74b749a..b667c54 100644
--- a/erpnext/accounts/doctype/journal_entry/journal_entry.py
+++ b/erpnext/accounts/doctype/journal_entry/journal_entry.py
@@ -501,7 +501,7 @@
 
 	def validate_empty_accounts_table(self):
 		if not self.get('accounts'):
-			frappe.throw("Accounts table cannot be blank.")
+			frappe.throw(_("Accounts table cannot be blank."))
 
 	def set_account_and_party_balance(self):
 		account_balance = {}
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 180831e..f95569d 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -429,7 +429,7 @@
 	def validate_supplier_invoice(self):
 		if self.bill_date:
 			if getdate(self.bill_date) > getdate(self.posting_date):
-				frappe.throw("Supplier Invoice Date cannot be greater than Posting Date")
+				frappe.throw(_("Supplier Invoice Date cannot be greater than Posting Date"))
 
 		if self.bill_no:
 			if cint(frappe.db.get_single_value("Accounts Settings", "check_supplier_invoice_uniqueness")):
@@ -449,7 +449,7 @@
 
 				if pi:
 					pi = pi[0][0]
-					frappe.throw("Supplier Invoice No exists in Purchase Invoice {0}".format(pi))
+					frappe.throw(_("Supplier Invoice No exists in Purchase Invoice {0}".format(pi)))
 
 	def update_billing_status_in_pr(self, update_modified=True):
 		updated_pr = []
diff --git a/erpnext/accounts/party.py b/erpnext/accounts/party.py
index 0c8d999..62725d3 100644
--- a/erpnext/accounts/party.py
+++ b/erpnext/accounts/party.py
@@ -313,8 +313,8 @@
 	if party_type and party_name:
 		party = frappe.db.get_value(party_type, party_name, ["is_frozen", "disabled"], as_dict=True)
 		if party.disabled:
-			frappe.throw("{0} {1} is disabled".format(party_type, party_name), PartyDisabled)
+			frappe.throw(_("{0} {1} is disabled".format(party_type, party_name), PartyDisabled))
 		elif party.is_frozen:
 			frozen_accounts_modifier = frappe.db.get_value( 'Accounts Settings', None,'frozen_accounts_modifier')
 			if not frozen_accounts_modifier in frappe.get_roles():
-				frappe.throw("{0} {1} is frozen".format(party_type, party_name), PartyFrozen)
+				frappe.throw(_("{0} {1} is frozen".format(party_type, party_name), PartyFrozen))
diff --git a/erpnext/manufacturing/doctype/production_order/production_order.py b/erpnext/manufacturing/doctype/production_order/production_order.py
index 04022c5..2c58fd2 100644
--- a/erpnext/manufacturing/doctype/production_order/production_order.py
+++ b/erpnext/manufacturing/doctype/production_order/production_order.py
@@ -267,7 +267,7 @@
 
 				# if time log needs to be moved, make sure that the from time is not the same
 				if _from_time == time_log.from_time:
-					frappe.throw("Capacity Planning Error")
+					frappe.throw(_("Capacity Planning Error"))
 
 			d.planned_start_time = time_log.from_time
 			d.planned_end_time = time_log.to_time
diff --git a/erpnext/projects/doctype/time_log/time_log.py b/erpnext/projects/doctype/time_log/time_log.py
index b2a855d..1d523d9 100644
--- a/erpnext/projects/doctype/time_log/time_log.py
+++ b/erpnext/projects/doctype/time_log/time_log.py
@@ -193,7 +193,7 @@
 			or self.get_overlap_for("user")
 
 		if not overlapping:
-			frappe.throw("Logical error: Must find overlapping")
+			frappe.throw(_("Logical error: Must find overlapping"))
 
 		self.from_time = get_datetime(overlapping.to_time) + get_mins_between_operations()