Add missing soft validation message (#2073)

app/models/form/sales/pages/deposit_and_mortgage_value_check.rb

@@ -6,7 +6,30 @@ class Form::Sales::Pages::DepositAndMortgageValueCheck < ::Form::Page
         "mortgage_plus_deposit_less_than_discounted_value?" => true,
       },
     ]
-    @informative_text = {}
+    @title_text = {
+      "translation" => "soft_validations.deposit_and_mortgage.title_text",
+      "arguments" => [
+        {
+          "key" => "mortgage",
+          "label" => true,
+          "i18n_template" => "mortgage",
+        },
+        {
+          "key" => "deposit",
+          "label" => true,
+          "i18n_template" => "deposit",
+        },
+        {
+          "key" => "discount",
+          "label" => true,
+          "i18n_template" => "discount",
+        },
+      ],
+    }
+    @informative_text = {
+      "translation" => "soft_validations.deposit_and_mortgage.hint_text",
+      "arguments" => [],
+    }
   end
 
   def questions

config/locales/en.yml

@@ -704,7 +704,9 @@ Make sure these answers are correct."
     charges:
       informative_text: "This is higher than we would expect."
       hint_text: "Check the following:<ul class=\"govuk-body-l app-panel--interruption\"><li>the decimal point</li><li>the frequency, for example every week or every calendar month</li><li>the needs type</li></ul>"
-
+    deposit_and_mortgage:
+      title_text: "You told us the mortgage amount was %{mortgage}, the cash deposit was %{deposit} and the discount was %{discount}."
+      hint_text: "We would expect the mortgage amount and the deposit added together to be the same as the purchase price minus the discount."
 
   devise:
     email: