Update success banner

app/controllers/form_controller.rb

@@ -257,6 +257,9 @@ private
   end
 
   def deduplication_success_banner
-    "<a class=\"govuk-notification-banner__link govuk-!-font-weight-bold\" href=\"#{send("#{@log.class.name.underscore}_path", @log)}\">Log #{@log.id}</a> is no longer a duplicate and has been removed from the list".html_safe
+    deduplicated_log_link = "<a class=\"govuk-notification-banner__link govuk-!-font-weight-bold\" href=\"#{send("#{@log.class.name.underscore}_path", @log)}\">Log #{@log.id}</a>"
+    changed_question_label = (@page.questions.first.check_answer_label.to_s.presence || @page.questions.first.header.to_s).downcase
+
+    I18n.t("notification.duplicate_logs.deduplication_success_banner", log_link: deduplicated_log_link, changed_question_label:).html_safe
   end
 end

config/locales/en.yml

@@ -187,6 +187,8 @@ en:
     duplicate_logs_deleted:
       one: "%{log_ids} has been deleted."
       other: "%{log_ids} have been deleted."
+    duplicate_logs:
+        deduplication_success_banner: "%{log_link} is no longer a duplicate and has been removed from the list.<p class=\"govuk-body govuk-!-margin-top-4\">You changed the %{changed_question_label}.</p>"
 
   validations:
     organisation:

spec/features/lettings_log_spec.rb

@@ -515,6 +515,7 @@ RSpec.describe "Lettings Log Features" do
         expect(page).to have_link("Back to Log #{lettings_log.id}", href: "/lettings-logs/#{lettings_log.id}")
         expect(page).to have_css(".govuk-notification-banner.govuk-notification-banner--success")
         expect(page).to have_content("Log #{duplicate_log.id} is no longer a duplicate and has been removed from the list")
+        expect(page).to have_content("You changed the tenant code.")
       end
 
       it "allows deduplicating logs by changing the answers on the original log" do
@@ -525,6 +526,7 @@ RSpec.describe "Lettings Log Features" do
         expect(page).to have_link("Back to Log #{lettings_log.id}", href: "/lettings-logs/#{lettings_log.id}")
         expect(page).to have_css(".govuk-notification-banner.govuk-notification-banner--success")
         expect(page).to have_content("Log #{lettings_log.id} is no longer a duplicate and has been removed from the list")
+        expect(page).to have_content("You changed the tenant code.")
       end
     end
   end

spec/features/sales_log_spec.rb

@@ -254,6 +254,7 @@ RSpec.describe "Sales Log Features" do
       expect(page).to have_link("Back to Log #{sales_log.id}", href: "/sales-logs/#{sales_log.id}")
       expect(page).to have_css(".govuk-notification-banner.govuk-notification-banner--success")
       expect(page).to have_content("Log #{duplicate_log.id} is no longer a duplicate and has been removed from the list")
+      expect(page).to have_content("You changed the purchaser code.")
     end
 
     it "allows deduplicating logs by changing the answers on the original log" do
@@ -264,6 +265,7 @@ RSpec.describe "Sales Log Features" do
       expect(page).to have_link("Back to Log #{sales_log.id}", href: "/sales-logs/#{sales_log.id}")
       expect(page).to have_css(".govuk-notification-banner.govuk-notification-banner--success")
       expect(page).to have_content("Log #{sales_log.id} is no longer a duplicate and has been removed from the list")
+      expect(page).to have_content("You changed the purchaser code.")
     end
   end
 end