diff --git a/app/services/bulk_upload/lettings/year2026/row_parser.rb b/app/services/bulk_upload/lettings/year2026/row_parser.rb
index 17c83545f..db19152c6 100644
--- a/app/services/bulk_upload/lettings/year2026/row_parser.rb
+++ b/app/services/bulk_upload/lettings/year2026/row_parser.rb
@@ -993,12 +993,13 @@ private
       errors.add(:field_9, error_message) # startdate
       errors.add(:field_10, error_message) # startdate
       errors.add(:field_13, error_message) # tenancycode
+      errors.add(:field_18, error_message) # uprn
+      errors.add(:field_19, error_message) # address_line_1
       errors.add(:field_23, error_message) # postcode_full
       errors.add(:field_24, error_message) # postcode_full
       errors.add(:field_25, error_message) # la
       errors.add(:field_42, error_message) # age1
       errors.add(:field_130, error_message) # sexrab1
-      errors.add(:field_43, error_message) # sex1
       errors.add(:field_46, error_message) # ecstat1
       errors.add(:field_122, error_message) unless general_needs? # household_charge
       errors.add(:field_124, error_message) # brent
diff --git a/spec/services/bulk_upload/lettings/year2026/row_parser_spec.rb b/spec/services/bulk_upload/lettings/year2026/row_parser_spec.rb
index 5e9325469..a45828b1a 100644
--- a/spec/services/bulk_upload/lettings/year2026/row_parser_spec.rb
+++ b/spec/services/bulk_upload/lettings/year2026/row_parser_spec.rb
@@ -359,6 +359,8 @@ RSpec.describe BulkUpload::Lettings::Year2026::RowParser do
                 :field_9, # startdate
                 :field_10, # startdate
                 :field_13, # tenancycode
+                :field_18, # uprn
+                :field_19, # address_line_1
                 :field_23, # postcode_full
                 :field_24, # postcode_full
                 :field_25, # la