diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb5598d0f08..e7bdc685c05 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -111,6 +111,7 @@ The present file will list all changes made to the project; according to the
 - `CommonITILActor::getActors()` signature changed. The `$items_id` parameter must strictly be an integer.
 - The `date_mod` property for historical entries returned by `Log::getHistoryData` is no longer formatted based on the user's preferences.
 - `Rule::dropdownRulesMatch()` has been made protected.
+- `ITILTemplateField::showForITILTemplate()` method is no longer abstract.
 
 #### Deprecated
 - Usage of `GLPI_USE_CSRF_CHECK` constant.
diff --git a/src/ITILTemplateField.php b/src/ITILTemplateField.php
index c2551bdc82d..f30dd0af079 100644
--- a/src/ITILTemplateField.php
+++ b/src/ITILTemplateField.php
@@ -33,6 +33,9 @@
  * ---------------------------------------------------------------------
  */
 
+use Glpi\Application\View\TemplateRenderer;
+use Glpi\Search\SearchOption;
+
 /**
  * ITILTemplateMandatoryField Class
  *
@@ -117,7 +120,171 @@ abstract public static function getExcludedFields();
      *
      * @return void
      **/
-    abstract public static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0);
+    public static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0)
+    {
+        /**
+         * @var \DBmysql $DB
+         * @var array $CFG_GLPI
+         */
+        global $DB, $CFG_GLPI;
+
+        $ID = $tt->fields['id'];
+
+        if (!$tt->getFromDB($ID) || !$tt->can($ID, READ)) {
+            return false;
+        }
+        $canedit = $tt->canEdit($ID);
+        $fields  = $tt->getAllowedFieldsNames(false);
+        $fields  = array_diff_key($fields, static::getExcludedFields());
+        $simplified_fields = $tt->getSimplifiedInterfaceFields();
+        $both_interfaces_label = sprintf(__('%1$s + %2$s'), __('Simplified interface'), __('Standard interface'));
+        $display_options = [
+            'relative_dates' => true,
+            'comments'       => true,
+            'html'           => true
+        ];
+        $itil_class    = static::$itiltype;
+        $searchOption  = SearchOption::getOptionsForItemtype($itil_class);
+        $itil_object   = new $itil_class();
+        $rand = mt_rand();
+
+        $crtiteria = [
+            'SELECT' => ['id', 'num'],
+            'FROM'   => static::getTable(),
+            'WHERE'  => [static::$items_id => $ID]
+        ];
+        if (is_subclass_of(static::class, ITILTemplatePredefinedField::class)) {
+            $crtiteria['SELECT'][] = 'value';
+        }
+        $iterator = $DB->request($crtiteria);
+        $entries = [];
+
+        $numrows = count($iterator);
+
+        $used         = [];
+        foreach ($iterator as $data) {
+            if (!array_key_exists($data['num'], $fields)) {
+                // Ignore deleted/unavailable fields
+                continue;
+            }
+            $interface_label = in_array($data['num'], $simplified_fields, false) ? $both_interfaces_label : __('Standard interface');
+            $entry = [
+                'itemtype' => static::class,
+                'id'       => $data['id'],
+                'name'     => $fields[$data['num']],
+                'interface' => $interface_label,
+            ];
+            if (is_subclass_of(static::class, ITILTemplatePredefinedField::class)) {
+                $display_datas[$searchOption[$data['num']]['field']] = $data['value'];
+                $value_label = $itil_object->getValueToDisplay(
+                    $searchOption[$data['num']],
+                    $display_datas,
+                    $display_options
+                );
+                $entry['value'] = $value_label;
+            }
+            $entries[] = $entry;
+            $used[$data['num']]        = $data['num'];
+        }
+
+        $fields_dropdown_values = [];
+        foreach ($fields as $k => $field) {
+            $is_simple_field = in_array($k, $simplified_fields, false);
+            $label = sprintf(__('%1$s (%2$s)'), $field, $is_simple_field ? $both_interfaces_label : __('Standard interface'));
+            $fields_dropdown_values[$k] = $label;
+        }
+
+        if (is_subclass_of(static::class, ITILTemplatePredefinedField::class)) {
+            $fields_dropdown_values = array_replace([
+                -1 => Dropdown::EMPTY_VALUE
+            ], $fields_dropdown_values);
+        }
+
+        if ($canedit) {
+            $extra_form_html = '';
+            if (is_subclass_of(static::class, ITILTemplatePredefinedField::class)) {
+                $embedded_ma_params = [
+                    'id_field'         => '__VALUE__',
+                    'itemtype'         => static::$itiltype,
+                    'inline'           => true,
+                    'submitname'       => _sx('button', 'Add'),
+                    'options'          => [
+                        'relative_dates'     => 1,
+                        'with_time'          => 1,
+                        'with_days'          => 0,
+                        'with_specific_date' => 0,
+                        'itemlink_as_string' => 1,
+                        'entity'             => $tt->getEntityID()
+                    ]
+                ];
+                $extra_form_html = Ajax::updateItemOnSelectEvent(
+                    "dropdown_num{$rand}",
+                    "show_massiveaction_field",
+                    $CFG_GLPI["root_doc"] . "/ajax/dropdownMassiveActionField.php",
+                    $embedded_ma_params,
+                    false
+                );
+                $extra_form_html .= "<div id='show_massiveaction_field'></div>";
+            }
+
+            $twig_params = [
+                'form_url' => static::getFormURL(),
+                'items_id_field' => static::$items_id,
+                'itemtype_name' => static::getTypeName(),
+                'used' => $used,
+                'id' => $ID,
+                'fields' => $fields_dropdown_values,
+                'extra_form_html' => $extra_form_html,
+                'rand' => $rand,
+                'show_submit' => !is_subclass_of(static::class, ITILTemplatePredefinedField::class)
+            ];
+            echo TemplateRenderer::getInstance()->renderFromStringTemplate(<<<TWIG
+                {% import 'components/form/fields_macros.html.twig' as fields %}
+                {% import 'components/form/basic_inputs_macros.html.twig' as inputs %}
+                <div>
+                    <form name="itiltemplatehidden_form{{ rand }}" method="post" action="{{ form_url }}" data-submit-once>
+                        {{ inputs.hidden('_glpi_csrf_token', csrf_token()) }}
+                        {{ inputs.hidden(items_id_field, id) }}
+                        <div class="d-flex justify-content-center flex-wrap">
+                            {{ fields.dropdownArrayField('num', 0, fields, null, {
+                                no_label: true,
+                                used: used,
+                                add_field_attribs: {
+                                    'aria-label': itemtype_name
+                                },
+                                rand: rand
+                            }) }}
+                            {{ extra_form_html|raw }}
+                            {% if show_submit %}
+                                <div class="ms-2">{{ inputs.submit('add', _x('button', 'Add')) }}</div>
+                            {% endif %}
+                        </div>
+                    </form>
+                </div>
+TWIG, $twig_params);
+        }
+
+        $columns = [
+            'name' => __('Name'),
+            'interface' => __("Profile's interface")
+        ];
+        if (is_subclass_of(static::class, ITILTemplatePredefinedField::class)) {
+            $columns['value'] = __('Value');
+        }
+        TemplateRenderer::getInstance()->display('components/datatable.html.twig', [
+            'is_tab' => true,
+            'nofilter' => true,
+            'columns' => $columns,
+            'entries' => $entries,
+            'total_number' => count($entries),
+            'filtered_number' => count($entries),
+            'showmassiveactions' => $canedit,
+            'massiveactionparams' => [
+                'num_displayed' => min($_SESSION['glpilist_limit'], $numrows),
+                'container'     => 'mass' . static::class . $rand
+            ],
+        ]);
+    }
 
 
     /**
diff --git a/src/ITILTemplateHiddenField.php b/src/ITILTemplateHiddenField.php
index 5bfd5bf2f3a..b8f1be74fe3 100644
--- a/src/ITILTemplateHiddenField.php
+++ b/src/ITILTemplateHiddenField.php
@@ -33,6 +33,8 @@
  * ---------------------------------------------------------------------
  */
 
+use Glpi\Application\View\TemplateRenderer;
+
 /**
  * ITILTemplateHiddenField Class
  *
@@ -148,113 +150,4 @@ public static function getExcludedFields()
             175 => 175, // ticket's tasks (template)
         ];
     }
-
-
-    /**
-     * Print the hidden fields
-     *
-     * @since 0.83
-     *
-     * @param ITILTemplate $tt            ITIL Template
-     * @param integer      $withtemplate  Template or basic item (default 0)
-     *
-     * @return void
-     **/
-    public static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0)
-    {
-        /** @var \DBmysql $DB */
-        global $DB;
-
-        $ID = $tt->fields['id'];
-
-        if (!$tt->getFromDB($ID) || !$tt->can($ID, READ)) {
-            return false;
-        }
-        $canedit = $tt->canEdit($ID);
-        $ttm     = new static();
-        $fields  = $tt->getAllowedFieldsNames(false);
-        $fields  = array_diff_key($fields, self::getExcludedFields());
-        $rand    = mt_rand();
-
-        $iterator = $DB->request([
-            'FROM'   => static::getTable(),
-            'WHERE'  => [static::$items_id => $ID]
-        ]);
-
-        $numrows = count($iterator);
-
-        $hiddenfields = [];
-        $used         = [];
-        foreach ($iterator as $data) {
-            $hiddenfields[$data['id']] = $data;
-            $used[$data['num']]        = $data['num'];
-        }
-
-        if ($canedit) {
-            echo "<div class='firstbloc'>";
-            echo "<form name='changeproblem_form$rand' id='changeproblem_form$rand' method='post'
-                  action='" . $ttm->getFormURL() . "'>";
-
-            echo "<table class='tab_cadre_fixe'>";
-            echo "<tr class='tab_bg_2'><th colspan='2'>" . __('Add a hidden field') . "</th></tr>";
-            echo "<tr class='tab_bg_2'><td class='right'>";
-            echo "<input type='hidden' name='" . static::$items_id . "' value='$ID'>";
-            Dropdown::showFromArray('num', $fields, ['used' => $used]);
-            echo "</td><td class='center'>";
-            echo "&nbsp;<input type='submit' name='add' value=\"" . _sx('button', 'Add') .
-                        "\" class='btn btn-primary'>";
-            echo "</td></tr>";
-            echo "</table>";
-            Html::closeForm();
-            echo "</div>";
-        }
-
-        echo "<div class='spaced'>";
-        if ($canedit && $numrows) {
-            Html::openMassiveActionsForm('mass' . $ttm->getType() . $rand);
-            $massiveactionparams = ['num_displayed' => min($_SESSION['glpilist_limit'], $numrows),
-                'container'     => 'mass' . $ttm->getType() . $rand
-            ];
-            Html::showMassiveActions($massiveactionparams);
-        }
-        echo "<table class='tab_cadre_fixehov'>";
-        echo "<tr class='noHover'><th colspan='2'>";
-        echo static::getTypeName(count($iterator));
-        echo "</th></tr>";
-        if ($numrows) {
-            $header_begin  = "<tr>";
-            $header_top    = '';
-            $header_bottom = '';
-            $header_end    = '';
-            if ($canedit) {
-                $header_top    .= "<th width='10'>";
-                $header_top    .= Html::getCheckAllAsCheckbox('mass' . $ttm->getType() . $rand) . "</th>";
-                $header_bottom .= "<th width='10'>";
-                $header_bottom .= Html::getCheckAllAsCheckbox('mass' . $ttm->getType() . $rand) . "</th>";
-            }
-            $header_end .= "<th>" . __('Name') . "</th>";
-            $header_end .= "</tr>";
-            echo $header_begin . $header_top . $header_end;
-
-            foreach ($hiddenfields as $data) {
-                echo "<tr class='tab_bg_2'>";
-                if ($canedit) {
-                    echo "<td>" . Html::getMassiveActionCheckBox($ttm->getType(), $data["id"]) . "</td>";
-                }
-                echo "<td>" . $fields[$data['num']] . "</td>";
-                echo "</tr>";
-            }
-            echo $header_begin . $header_bottom . $header_end;
-        } else {
-            echo "<tr><th colspan='2'>" . __('No item found') . "</th></tr>";
-        }
-
-        echo "</table>";
-        if ($canedit && $numrows) {
-            $massiveactionparams['ontop'] = false;
-            Html::showMassiveActions($massiveactionparams);
-            Html::closeForm();
-        }
-        echo "</div>";
-    }
 }
diff --git a/src/ITILTemplateMandatoryField.php b/src/ITILTemplateMandatoryField.php
index c5f8b41760a..dd770e76aec 100644
--- a/src/ITILTemplateMandatoryField.php
+++ b/src/ITILTemplateMandatoryField.php
@@ -149,136 +149,4 @@ public static function getExcludedFields()
             175 => 175, // ticket's tasks
         ];
     }
-
-    /**
-     * Print the mandatory fields
-     *
-     * @since 0.83
-     *
-     * @param ITILTemplate $tt           ITIL Template
-     * @param integer      $withtemplate Template or basic item (default 0)
-     *
-     * @return void
-     **/
-    public static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0)
-    {
-        /** @var \DBmysql $DB */
-        global $DB;
-
-        $ID = $tt->fields['id'];
-
-        if (!$tt->getFromDB($ID) || !$tt->can($ID, READ)) {
-            return false;
-        }
-        $canedit           = $tt->canEdit($ID);
-        $ttm               = new static();
-        $fields            = $ttm->getAllFields($tt);
-        $simplified_fields = $tt->getSimplifiedInterfaceFields();
-        $both_interfaces   = sprintf(__('%1$s + %2$s'), __('Simplified interface'), __('Standard interface'));
-
-        $rand  = mt_rand();
-
-        $iterator = $DB->request([
-            'FROM'   => static::getTable(),
-            'WHERE'  => [static::$items_id => $ID]
-        ]);
-
-        $numrows = count($iterator);
-
-        $mandatoryfields = [];
-        $used            = [];
-        foreach ($iterator as $data) {
-            $mandatoryfields[$data['id']] = $data;
-            $used[$data['num']]           = $data['num'];
-        }
-
-        if ($canedit) {
-            echo "<div class='firstbloc'>";
-            echo "<form name='changeproblem_form$rand' id='changeproblem_form$rand' method='post'
-                  action='" . $ttm->getFormURL() . "'>";
-
-            echo "<table class='tab_cadre_fixe'>";
-            echo "<tr class='tab_bg_2'><th colspan='2'>" . __('Add a mandatory field') . "</th></tr>";
-            echo "<tr class='tab_bg_2'><td class='right'>";
-            echo "<input type='hidden' name='" . static::$items_id . "' value='$ID'>";
-
-            $select_fields = $fields;
-            foreach ($select_fields as $key => $val) {
-                if (static::$itiltype == Ticket::getType()) {
-                    if (in_array($key, $simplified_fields)) {
-                        $select_fields[$key] = sprintf(__('%1$s (%2$s)'), $val, $both_interfaces);
-                    } else {
-                        $select_fields[$key] = sprintf(__('%1$s (%2$s)'), $val, __('Standard interface'));
-                    }
-                } else {
-                    $select_fields[$key] = $val;
-                }
-            }
-
-            Dropdown::showFromArray('num', $select_fields, ['used' => $used]);
-            echo "</td><td class='center'>";
-            echo "&nbsp;<input type='submit' name='add' value=\"" . _sx('button', 'Add') .
-                        "\" class='btn btn-primary'>";
-            echo "</td></tr>";
-            echo "</table>";
-            Html::closeForm();
-            echo "</div>";
-        }
-
-        echo "<div class='spaced'>";
-        if ($canedit && $numrows) {
-            Html::openMassiveActionsForm('mass' . $ttm->getType() . $rand);
-            $massiveactionparams = ['num_displayed' => min($_SESSION['glpilist_limit'], $numrows),
-                'container'     => 'mass' . $ttm->getType() . $rand
-            ];
-            Html::showMassiveActions($massiveactionparams);
-        }
-        echo "<table class='tab_cadre_fixehov'>";
-        echo "<tr class='noHover'><th colspan='3'>";
-        echo static::getTypeName(count($iterator));
-        echo "</th></tr>";
-        if ($numrows) {
-            $header_begin  = "<tr>";
-            $header_top    = '';
-            $header_bottom = '';
-            $header_end    = '';
-            if ($canedit) {
-                $header_top    .= "<th width='10'>";
-                $header_top    .= Html::getCheckAllAsCheckbox('mass' . $ttm->getType() . $rand) . "</th>";
-                $header_bottom .= "<th width='10'>";
-                $header_bottom .= Html::getCheckAllAsCheckbox('mass' . $ttm->getType() . $rand) . "</th>";
-            }
-            $header_end .= "<th>" . __('Name') . "</th>";
-            $header_end .= "<th>" . __("Profile's interface") . "</th>";
-            $header_end .= "</tr>";
-            echo $header_begin . $header_top . $header_end;
-
-            foreach ($mandatoryfields as $data) {
-                echo "<tr class='tab_bg_2'>";
-                if ($canedit) {
-                    echo "<td>" . Html::getMassiveActionCheckBox($ttm->getType(), $data["id"]) . "</td>";
-                }
-                echo "<td>" . $fields[$data['num']] . "</td>";
-                echo "<td>";
-                if (in_array($data['num'], $simplified_fields)) {
-                    echo $both_interfaces;
-                } else {
-                    echo __('Standard interface');
-                }
-                echo "</td>";
-                echo "</tr>";
-            }
-            echo $header_begin . $header_bottom . $header_end;
-        } else {
-            echo "<tr><th colspan='2'>" . __('No item found') . "</th></tr>";
-        }
-
-        echo "</table>";
-        if ($canedit && $numrows) {
-            $massiveactionparams['ontop'] = false;
-            Html::showMassiveActions($massiveactionparams);
-            Html::closeForm();
-        }
-        echo "</div>";
-    }
 }
diff --git a/src/ITILTemplatePredefinedField.php b/src/ITILTemplatePredefinedField.php
index fd672b4ac75..54918b96fe0 100644
--- a/src/ITILTemplatePredefinedField.php
+++ b/src/ITILTemplatePredefinedField.php
@@ -248,173 +248,4 @@ public static function getExcludedFields()
             142  => 142, // documents
         ];
     }
-
-
-    /**
-     * Print the predefined fields
-     *
-     * @since 0.83
-     *
-     * @param ITILTemplate $tt            ITIL Template
-     * @param integer      $withtemplate  Template or basic item (default 0)
-     *
-     * @return void
-     **/
-    public static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0)
-    {
-        /**
-         * @var array $CFG_GLPI
-         * @var \DBmysql $DB
-         */
-        global $CFG_GLPI, $DB;
-
-        $ID = $tt->fields['id'];
-
-        if (!$tt->getFromDB($ID) || !$tt->can($ID, READ)) {
-            return false;
-        }
-
-        $canedit       = $tt->canEdit($ID);
-
-        $fields        = $tt->getAllowedFieldsNames(true, true);
-        $fields        = array_diff_key($fields, self::getExcludedFields());
-
-        $itil_class    = static::$itiltype;
-        $searchOption  = SearchOption::getOptionsForItemtype($itil_class);
-        $itil_object   = new $itil_class();
-        $rand          = mt_rand();
-
-        $iterator = $DB->request([
-            'FROM'   => static::getTable(),
-            'WHERE'  => [static::$items_id => $ID],
-            'ORDER'  => 'id'
-        ]);
-
-        $display_options = [
-            'relative_dates' => true,
-            'comments'       => true,
-            'html'           => true
-        ];
-
-        $predeffields = [];
-        $used         = [];
-        $numrows      = count($iterator);
-        foreach ($iterator as $data) {
-            $predeffields[$data['id']] = $data;
-            $used[$data['num']] = $data['num'];
-        }
-
-        if ($canedit) {
-            echo "<div class='firstbloc'>";
-            echo "<form name='changeproblem_form$rand' id='changeproblem_form$rand' method='post'
-               action='" . static::getFormURL() . "'>";
-
-            echo "<table class='tab_cadre_fixe'>";
-            echo "<tr class='tab_bg_2'><th colspan='3'>" . __('Add a predefined field') . "</th></tr>";
-            echo "<tr class='tab_bg_2'><td class='right top' width='30%'>";
-            echo "<input type='hidden' name='" . static::$items_id . "' value='$ID'>";
-            $display_fields[-1] = Dropdown::EMPTY_VALUE;
-            $display_fields    += $fields;
-
-           // Unset multiple items
-            $multiple = self::getMultiplePredefinedValues();
-            foreach ($multiple as $val) {
-                if (isset($used[$val])) {
-                    unset($used[$val]);
-                }
-            }
-
-            $rand_dp  = Dropdown::showFromArray('num', $display_fields, ['used' => $used,
-                'toadd'
-            ]);
-            echo "</td><td class='top'>";
-            $paramsmassaction = ['id_field'         => '__VALUE__',
-                'itemtype'         => static::$itiltype,
-                'inline'           => true,
-                'submitname'       => _sx('button', 'Add'),
-                'options'          => ['relative_dates'     => 1,
-                    'with_time'          => 1,
-                    'with_days'          => 0,
-                    'with_specific_date' => 0,
-                    'itemlink_as_string' => 1,
-                    'entity'             => $tt->getEntityID()
-                ]
-            ];
-
-            Ajax::updateItemOnSelectEvent(
-                "dropdown_num" . $rand_dp,
-                "show_massiveaction_field",
-                $CFG_GLPI["root_doc"] . "/ajax/dropdownMassiveActionField.php",
-                $paramsmassaction
-            );
-            echo "</td><td>";
-            echo "<span id='show_massiveaction_field'>&nbsp;</span>\n";
-            echo "</td></tr>";
-            echo "</table>";
-            Html::closeForm();
-            echo "</div>";
-        }
-
-        echo "<div class='spaced'>";
-        if ($canedit && $numrows) {
-            Html::openMassiveActionsForm('mass' . static::getType() . $rand);
-            $massiveactionparams = ['num_displayed' => min($_SESSION['glpilist_limit'], $numrows),
-                'container'     => 'mass' . static::getType() . $rand
-            ];
-            Html::showMassiveActions($massiveactionparams);
-        }
-        echo "<table class='tab_cadre_fixehov'>";
-        echo "<tr class='noHover'><th colspan='3'>";
-        echo self::getTypeName($numrows);
-        echo "</th></tr>";
-        if ($numrows) {
-            $header_begin  = "<tr>";
-            $header_top    = '';
-            $header_bottom = '';
-            $header_end    = '';
-            if ($canedit) {
-                $header_top    .= "<th width='10'>";
-                $header_top    .= Html::getCheckAllAsCheckbox('mass' . static::getType() . $rand) . "</th>";
-                $header_bottom .= "<th width='10'>";
-                $header_bottom .= Html::getCheckAllAsCheckbox('mass' . static::getType() . $rand) . "</th>";
-            }
-            $header_end .= "<th>" . __('Name') . "</th>";
-            $header_end .= "<th>" . __('Value') . "</th>";
-            $header_end .= "</tr>";
-            echo $header_begin . $header_top . $header_end;
-
-            foreach ($predeffields as $data) {
-                if (!isset($fields[$data['num']])) {
-                   // could happen when itemtype removed and items_id present
-                    continue;
-                }
-                echo "<tr class='tab_bg_2'>";
-                if ($canedit) {
-                    echo "<td>" . Html::getMassiveActionCheckBox(static::getType(), $data["id"]) . "</td>";
-                }
-                echo "<td>" . $fields[$data['num']] . "</td>";
-
-                echo "<td>";
-                $display_datas[$searchOption[$data['num']]['field']] = $data['value'];
-                echo $itil_object->getValueToDisplay(
-                    $searchOption[$data['num']],
-                    $display_datas,
-                    $display_options
-                );
-                echo "</td>";
-                echo "</tr>";
-            }
-            echo $header_begin . $header_bottom . $header_end;
-        } else {
-            echo "<tr><th colspan='3'>" . __('No item found') . "</th></tr>";
-        }
-
-        echo "</table>";
-        if ($canedit && $numrows) {
-            $massiveactionparams['ontop'] = false;
-            Html::showMassiveActions($massiveactionparams);
-            Html::closeForm();
-        }
-        echo "</div>";
-    }
 }
diff --git a/src/ITILTemplateReadonlyField.php b/src/ITILTemplateReadonlyField.php
index ea144759388..4fc79bbdd28 100644
--- a/src/ITILTemplateReadonlyField.php
+++ b/src/ITILTemplateReadonlyField.php
@@ -160,105 +160,4 @@ public static function getExcludedFields()
             193 => 193, // Contract
         ];
     }
-
-
-    /**
-     * Print the readonly fields
-     *
-     * @param ITILTemplate $tt            ITIL Template
-     * @param boolean      $withtemplate  Template or basic item (default 0)
-     *
-     * @return void
-     **/
-    public static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0)
-    {
-        /** @var \DBmysql $DB */
-        global $DB;
-
-        $ID = $tt->fields['id'];
-
-        if (!$tt->getFromDB($ID) || !$tt->can($ID, READ)) {
-            return false;
-        }
-        $canedit = $tt->canEdit($ID);
-        $ttr     = new static();
-        $fields  = $tt->getAllowedFieldsNames(false);
-        $fields  = array_diff_key($fields, self::getExcludedFields());
-        $rand    = mt_rand();
-
-        $iterator = $DB->request([
-            'FROM'   => static::getTable(),
-            'WHERE'  => [static::$items_id => $ID]
-        ]);
-
-        $numrows = count($iterator);
-
-        $readonlyfields = [];
-        $used         = [];
-        foreach ($iterator as $data) {
-            $readonlyfields[$data['id']] = $data;
-            $used[$data['num']]        = $data['num'];
-        }
-
-        if ($canedit) {
-            echo TemplateRenderer::getInstance()->render('components/form/add_field.html.twig', [
-                'rand'              => $rand,
-                'form_url'          => $ttr->getFormURL(),
-                'form_title'        => __('Add a read only field'),
-                'itemtype'          => __CLASS__,
-                'items_name'        => static::$items_id,
-                'items_id'          => $ID,
-                'readonlyfields'    => $fields,
-                'used'              => $used,
-            ]);
-        }
-
-        echo "<div class='spaced'>";
-        if ($canedit && $numrows) {
-            Html::openMassiveActionsForm('mass' . $ttr->getType() . $rand);
-            $massiveactionparams = ['num_displayed' => min($_SESSION['glpilist_limit'], $numrows),
-                'container'     => 'mass' . $ttr->getType() . $rand
-            ];
-            Html::showMassiveActions($massiveactionparams);
-        }
-        echo "<table class='tab_cadre_fixehov'>";
-        echo "<tr class='noHover'><th colspan='2'>";
-        echo static::getTypeName(count($iterator));
-        echo "</th></tr>";
-        if ($numrows) {
-            $header_begin  = "<tr>";
-            $header_top    = '';
-            $header_bottom = '';
-            $header_end    = '';
-            if ($canedit) {
-                $header_top    .= "<th width='10'>";
-                $header_top    .= Html::getCheckAllAsCheckbox('mass' . $ttr->getType() . $rand) . "</th>";
-                $header_bottom .= "<th width='10'>";
-                $header_bottom .= Html::getCheckAllAsCheckbox('mass' . $ttr->getType() . $rand) . "</th>";
-            }
-            $header_end .= "<th>" . __('Name') . "</th>";
-            $header_end .= "</tr>";
-            echo $header_begin . $header_top . $header_end;
-
-            foreach ($readonlyfields as $data) {
-                echo "<tr class='tab_bg_2'>";
-                if ($canedit) {
-                    echo "<td>" . Html::getMassiveActionCheckBox($ttr->getType(), $data["id"]) . "</td>";
-                }
-                echo "<td>" . $fields[$data['num']] . "</td>";
-                echo "</tr>";
-            }
-            echo $header_begin . $header_bottom . $header_end;
-        } else {
-            echo "<tr><th colspan='2'>" . __('No item found') . "</th></tr>";
-        }
-
-        echo "</table>";
-        if ($canedit && $numrows) {
-            $massiveactionparams['ontop'] = false;
-            Html::showMassiveActions($massiveactionparams);
-            Html::closeForm();
-        }
-        echo "</div>";
-    }
 }
diff --git a/templates/components/form/add_field.html.twig b/templates/components/form/add_field.html.twig
deleted file mode 100644
index 2c8630c0835..00000000000
--- a/templates/components/form/add_field.html.twig
+++ /dev/null
@@ -1,55 +0,0 @@
-{#
- # ---------------------------------------------------------------------
- #
- # GLPI - Gestionnaire Libre de Parc Informatique
- #
- # http://glpi-project.org
- #
- # @copyright 2015-2024 Teclib' and contributors.
- # @copyright 2003-2014 by the INDEPNET Development Team.
- # @licence   https://www.gnu.org/licenses/gpl-3.0.html
- #
- # ---------------------------------------------------------------------
- #
- # LICENSE
- #
- # This file is part of GLPI.
- #
- # This program is free software: you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation, either version 3 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program.  If not, see <https://www.gnu.org/licenses/>.
- #
- # ---------------------------------------------------------------------
- #}
-
-{% import 'components/form/fields_macros.html.twig' as fields %}
-
-{% set rand = rand|default(random()) %}
-<div class="firstbloc">
-    <form id="{{ itemtype|lower ~ "_form" ~ rand }}" name="{{ itemtype|lower ~ "_form" ~ rand }}" method="post" action="{{ form_url }}">
-        <table class="tab_cadre_fixe">
-            <tr class="tab_bg_2">
-                <th colspan="2">{{ form_title }}</th>
-            </tr>
-            <tr class="tab_bg_2">
-                <td class="right">
-                    <input type="hidden" name="{{ items_name }}" value="{{ items_id }}">
-                    {{ fields.dropdownArrayField('num', readonlyfields|first, readonlyfields, '', {'used': used}) }}
-                </td>
-                <td class="center">
-                    &nbsp;<input type="submit" name="add" value="{{ _x('button', 'Add') }}" class="btn btn-primary">
-                </td>
-            </tr>
-        </table>
-        {{ fields.hiddenField('_glpi_csrf_token', csrf_token()) }}
-    </form>
-</div>