extract old_visible_id in factory to trait

spec/factories/organisation.rb

@@ -9,8 +9,11 @@ FactoryBot.define do
     created_at { Time.zone.now }
     updated_at { Time.zone.now }
     holds_own_stock { true }
+
+    trait :with_old_visible_id do
       old_visible_id { rand(9_999_999).to_s }
     end
+  end
 
   factory :organisation_rent_period do
     organisation

spec/services/bulk_upload/processor_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe BulkUpload::Processor do
       it "persist the validation errors" do
         allow(BulkUpload::Downloader).to receive(:new).with(bulk_upload:).and_return(mock_downloader)
 
-        expect { processor.call }.to change(BulkUploadError, :count).by(10)
+        expect { processor.call }.to change(BulkUploadError, :count).by(8)
       end
 
       it "deletes the local file afterwards" do