diff --git a/app/models/validations/sales/household_validations.rb b/app/models/validations/sales/household_validations.rb
index f9318ab0f..ec73b4abb 100644
--- a/app/models/validations/sales/household_validations.rb
+++ b/app/models/validations/sales/household_validations.rb
@@ -14,8 +14,8 @@ module Validations::Sales::HouseholdValidations
     return unless record.postcode_full && record.ppostcode_full && record.discounted_ownership_sale?
 
     unless record.postcode_full == record.ppostcode_full
-      record.errors.add :postcode_full, I18n.t("validations.household.postcode.discounted_ownership")
-      record.errors.add :ppostcode_full, I18n.t("validations.household.postcode.discounted_ownership")
+      record.errors.add :postcode_full, :postcodes_not_matching, message: I18n.t("validations.household.postcode.discounted_ownership")
+      record.errors.add :ppostcode_full, :postcodes_not_matching, message: I18n.t("validations.household.postcode.discounted_ownership")
     end
   end
 
diff --git a/app/services/imports/sales_logs_import_service.rb b/app/services/imports/sales_logs_import_service.rb
index 6244e28e7..ed127bff2 100644
--- a/app/services/imports/sales_logs_import_service.rb
+++ b/app/services/imports/sales_logs_import_service.rb
@@ -192,6 +192,11 @@ module Imports
           attributes.delete(error.attribute.to_s)
         end
         @logs_overridden << sales_log.old_id
+        if sales_log.errors.of_kind?(:postcode_full, :postcodes_not_matching)
+          @logger.warn("Log #{sales_log.old_id}: Removing postcode known and previous postcode known as the postcodes are invalid")
+          attributes.delete("pcodenk")
+          attributes.delete("ppcodenk")
+        end
         save_sales_log(attributes, previous_status)
       else
         @logger.error("Log #{sales_log.old_id}: Failed to import")
diff --git a/spec/services/imports/sales_logs_import_service_spec.rb b/spec/services/imports/sales_logs_import_service_spec.rb
index b8d1c592f..2481cdce7 100644
--- a/spec/services/imports/sales_logs_import_service_spec.rb
+++ b/spec/services/imports/sales_logs_import_service_spec.rb
@@ -394,6 +394,37 @@ RSpec.describe Imports::SalesLogsImportService do
       end
     end
 
+    context "and it has an invalid record with invalid postcodes" do
+      let(:sales_log_id) { "discounted_ownership_sales_log" }
+
+      before do
+        sales_log_xml.at_xpath("//meta:status").content = "submitted-invalid"
+        sales_log_xml.at_xpath("//xmlns:Q7Postcode").content = "A1 1AA"
+        sales_log_xml.at_xpath("//xmlns:Q14Postcode").content = "A1 2AA"
+      end
+
+      it "intercepts the relevant validation error" do
+        expect(logger).to receive(:warn).with(/Removing field postcode_full from log triggering validation: Buyer's last accommodation and discounted ownership postcodes must match/)
+        expect(logger).to receive(:warn).with(/Removing field ppostcode_full from log triggering validation: Buyer's last accommodation and discounted ownership postcodes must match/)
+        expect(logger).to receive(:warn).with(/Removing field postcode_full from log triggering validation: postcodes_not_matching/)
+        expect(logger).to receive(:warn).with(/Removing field ppostcode_full from log triggering validation: postcodes_not_matching/)
+        expect(logger).to receive(:warn).with(/Removing postcode known and previous postcode known as the postcodes are invalid/)
+        expect { sales_log_service.send(:create_log, sales_log_xml) }
+          .not_to raise_error
+      end
+
+      it "clears out the invalid answers" do
+        allow(logger).to receive(:warn)
+
+        sales_log_service.send(:create_log, sales_log_xml)
+        sales_log = SalesLog.find_by(old_id: sales_log_id)
+
+        expect(sales_log).not_to be_nil
+        expect(sales_log.postcode_full).to be_nil
+        expect(sales_log.ppostcode_full).to be_nil
+      end
+    end
+
     context "when inferring default answers for completed sales logs" do
       context "when the armedforcesspouse is not answered" do
         let(:sales_log_id) { "discounted_ownership_sales_log" }