diff --git a/app/services/bulk_upload/sales/year2023/row_parser.rb b/app/services/bulk_upload/sales/year2023/row_parser.rb
index 741536f61..3dba8cfec 100644
--- a/app/services/bulk_upload/sales/year2023/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2023/row_parser.rb
@@ -1,6 +1,7 @@
 class BulkUpload::Sales::Year2023::RowParser
   include ActiveModel::Model
   include ActiveModel::Attributes
+  include InterruptionScreenHelper
 
   QUESTIONS = {
     field_1: "Which organisation owned this property before the sale?",
@@ -405,6 +406,7 @@ class BulkUpload::Sales::Year2023::RowParser
   validate :validate_created_by_exists, on: :after_log
   validate :validate_created_by_related, on: :after_log
   validate :validate_relevant_collection_window, on: :after_log
+  validate :validate_incomplete_soft_validations, on: :after_log
 
   validate :validate_uprn_exists_if_any_key_adddress_fields_are_blank, on: :after_log
   validate :validate_address_line_1, on: :after_log
@@ -1209,4 +1211,21 @@ private
       errors.add(:field_6, error_message) # Purchaser code
     end
   end
+
+  def validate_incomplete_soft_validations
+    routed_to_soft_validation_questions = log.form.questions.filter { |q| q.type == "interruption_screen" && q.page.routed_to?(log, nil) }
+    routed_to_soft_validation_questions.each do |question|
+      next unless question
+      next if question.completed?(log)
+
+      question.page.interruption_screen_question_ids.each do |interruption_screen_question_id|
+        field_mapping_for_errors[interruption_screen_question_id.to_sym].each do |field|
+          unless errors.any? { |e| e.options[:category] == :soft_validation && field_mapping_for_errors[interruption_screen_question_id.to_sym].include?(e.attribute) }
+            error_message = [display_title_text(question.page.title_text, log), display_informative_text(question.page.informative_text, log)].reject(&:empty?).join(". ")
+            errors.add(field, message: error_message, category: :soft_validation)
+          end
+        end
+      end
+    end
+  end
 end
diff --git a/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb b/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb
index ecbd457fb..f58e3b17d 100644
--- a/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb
+++ b/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb
@@ -684,6 +684,26 @@ RSpec.describe BulkUpload::Sales::Year2023::RowParser do
         end
       end
     end
+
+    describe "soft validations" do
+      context "when soft validation is triggered" do
+        let(:attributes) { valid_attributes.merge({ field_30: 22, field_35: 5 }) }
+
+        it "adds an error to the relevant fields" do
+          soft_validation_errors = parser.errors.select { |e| e.options[:category] == :soft_validation }
+
+          expect(soft_validation_errors.find { |e| e.attribute == :field_30 }).to be_present
+          expect(soft_validation_errors.find { |e| e.attribute == :field_35 }).to be_present
+        end
+
+        it "populates with correct error message" do
+          soft_validation_errors = parser.errors.select { |e| e.options[:category] == :soft_validation }
+
+          expect(soft_validation_errors.find { |e| e.attribute == :field_30 }.message).to eql("You told us this person is aged 22 years and retired.")
+          expect(soft_validation_errors.find { |e| e.attribute == :field_35 }.message).to eql("You told us this person is aged 22 years and retired.")
+        end
+      end
+    end
   end
 
   describe "#log" do