add field uuid param

lib/params/submission_create_validator.rb

@@ -87,7 +87,7 @@ module Params
       type(submitter_params, :fields, Array)
 
       in_path_each(submitter_params, :fields) do |field_params|
-        required(field_params, :name)
+        required(field_params, %i[name uuid])
 
         type(field_params, :name, String)
         type(field_params, :validation_pattern, String)

lib/submissions/create_from_submitters.rb

@@ -102,7 +102,11 @@ module Submissions
         next if f['submitter_uuid'] != submitter_uuid
 
         field_configs = fields.find do |e|
-          e['name'].to_s.casecmp(f['name'].to_s).zero? || e['name'] == f['name'].to_s.parameterize.underscore
+          if e['name'].present?
+            e['name'].to_s.casecmp(f['name'].to_s).zero? || e['name'] == f['name'].to_s.parameterize.underscore
+          else
+            e['uuid'] == f['uuid']
+          end
         end
 
         next if field_configs.blank?

lib/submissions/normalize_param_utils.rb

@@ -22,7 +22,7 @@ module Submissions
       default_values = submitter_params[:values] || {}
 
       submitter_params[:fields]&.each do |f|
-        default_values[f[:name]] = f[:default_value] if f.key?(:default_value)
+        default_values[f[:name].presence || f[:uuid]] = f[:default_value] if f.key?(:default_value)
       end
 
       return submitter_params if default_values.blank?