move validation message to locales

app/services/bulk_upload/lettings/row_parser.rb

@@ -171,7 +171,7 @@ private
 
   def validate_la_with_local_housing_referral
     if field_78 == 3 && owning_organisation && owning_organisation.la?
-      errors.add(:field_78, "The source of the referral cannot be Nominated by local housing authority as your organisation is a local authority")
+      errors.add(:field_78, I18n.t("validations.household.referral.nominated_by_local_ha_but_la"))
     end
   end
 

config/locales/en.yml

@@ -356,6 +356,7 @@ en:
         other_homeless: "Answer cannot be internal transfer as the tenant was considered homeless by their landlord"
         prevten_invalid: "Answer cannot be internal transfer as the household situation immediately before this letting was %{prevten}"
         reason_permanently_decanted: "Answer must be internal transfer as the tenant was permanently decanted from another property owned by this landlord"
+        nominated_by_local_ha_but_la: The source of the referral cannot be Nominated by local housing authority as your organisation is a local authority
         la_general_needs:
           internal_transfer: "Answer cannot be internal transfer as it’s the same landlord on the tenancy agreement and the household had either a fixed-term or lifetime local authority general needs tenancy immediately before this letting"
         prp: