diff --git a/app/services/bulk_upload/lettings/row_parser.rb b/app/services/bulk_upload/lettings/row_parser.rb
index bf1f62eba..2acd82d99 100644
--- a/app/services/bulk_upload/lettings/row_parser.rb
+++ b/app/services/bulk_upload/lettings/row_parser.rb
@@ -150,6 +150,7 @@ class BulkUpload::Lettings::RowParser
   validate :validate_cannot_be_la_referral_if_general_needs
   validate :validate_leaving_reason_for_renewal
   validate :validate_lettings_type_matches_bulk_upload
+  validate :validate_if_log_already_exists
   validate :validate_only_one_housing_needs_type
   validate :validate_no_disabled_needs_conjunction
   validate :validate_dont_know_disabled_needs_conjunction
@@ -292,6 +293,18 @@ private
     end
   end
 
+  def validate_if_log_already_exists
+    fields = {
+      "beds" => field_101,
+      "joint" => field_133,
+    }
+    duplicate_log_exists = LettingsLog.where(fields).present?
+
+    if duplicate_log_exists
+      errors.add('test', "test")
+    end
+  end
+
   def field_mapping_for_errors
     {
       lettype: [:field_1],