adds missing 'translatability'
diff --git a/erpnext/accounts/doctype/subscriptions/subscriptions.py b/erpnext/accounts/doctype/subscriptions/subscriptions.py
index eed4e87..e47b7ea 100644
--- a/erpnext/accounts/doctype/subscriptions/subscriptions.py
+++ b/erpnext/accounts/doctype/subscriptions/subscriptions.py
@@ -243,7 +243,7 @@
 	def process_for_past_due_date(self):
 		current_invoice = self.get_current_invoice()
 		if not current_invoice:
-			frappe.throw('Current invoice is missing')
+			frappe.throw(_('Current invoice {0} is missing'.format(current_invoice.invoice)))
 		else:
 			if self.is_not_outstanding(current_invoice):
 				self.status = 'Active'