@BirenRathod alerted me to problems appearing in the Drupal log.
Message Warning: Undefined array key "smpAttr:" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1413 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined variable $default in iform_poms_sectioned_transects_input_sample::_buildSortControl() (line 1650 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_2" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1444 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_2" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1528 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_3" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1529 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_4" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1530 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined variable $r in iform_poms_sectioned_transects_input_sample::_buildSortControl() (line 1696 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
@BirenRathod alerted me to problems appearing in the Drupal log.
Message Warning: Undefined array key "smpAttr:" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1413 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined variable $default in iform_poms_sectioned_transects_input_sample::_buildSortControl() (line 1650 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_2" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1444 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_2" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1528 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_3" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1529 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined array key "taxon_list_id_4" in iform_poms_sectioned_transects_input_sample::get_occurrences_form() (line 1530 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)
Warning: Undefined variable $r in iform_poms_sectioned_transects_input_sample::_buildSortControl() (line 1696 of /code/web/modules/custom/iform/client_helpers/prebuilt_forms/poms_sectioned_transects_input_sample.php)