Editable Fields, Custom Submit function is not being called?
You can try this:

function apws_extras_form_alter(&amp;$form, &amp;$form_state, $form_id) {
    switch ($form_id) {
case 'editablefields_form_node_field_apws_batch_completed_field':
      if ($form['type']['#value'] == 'apws_batch') {
        $form['#validate'][] = 'apws_extras_batch_completed_form_validate';
        //$form['#submit'][] = 'apws_extras_batch_completed_form_submit';
        $form['actions']['submit']['#submit'][] = 'apws_extras_batch_completed_form_submit';
      }
      break;
  }
}

function apws_extras_batch_completed_form_validate(&amp;$form, &amp;$form_state){
  // Check if this field is set.
  // Code for validation here.
}

function apws_extras_batch_completed_form_submit(&amp;$form, &amp;$form_state) {
  drupal_set_message('Submit is working');
}