diff --git a/app/models/validations/sales/sale_information_validations.rb b/app/models/validations/sales/sale_information_validations.rb
index 874ebfc73..aa6cbe484 100644
--- a/app/models/validations/sales/sale_information_validations.rb
+++ b/app/models/validations/sales/sale_information_validations.rb
@@ -19,8 +19,8 @@ module Validations::Sales::SaleInformationValidations
     return unless record.exdate && record.saledate
 
     if record.exdate > record.saledate
-      record.errors.add :exdate, "Exchange date must be before completion date"
-      record.errors.add :saledate, "Exchange date must be before completion date"
+      record.errors.add :exdate, I18n.t("validations.sale_information.completion_exchange.exchange_before_completion")
+      record.errors.add :saledate, I18n.t("validations.sale_information.completion_exchange.completion_after_exchange")
     end
   end
 
diff --git a/config/locales/en.yml b/config/locales/en.yml
index f44004d77..f525a62df 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -419,6 +419,9 @@ en:
         property_type_bedsit: "Bedsit bedroom maximum 1"
       previous_property_type:
         property_type_bedsit: "A bedsit can not have more than 1 bedroom"
+      completion_exchange:
+        exchange_before_completion: "Exchange date must be before completion date"
+        completion_after_exchange: "Completion date must be after exchange date"
 
   soft_validations:
     net_income: