diff --git a/src/Glpi/Api/HL/Controller/ITILController.php b/src/Glpi/Api/HL/Controller/ITILController.php
index d4513a4bf06..0459b6762c6 100644
--- a/src/Glpi/Api/HL/Controller/ITILController.php
+++ b/src/Glpi/Api/HL/Controller/ITILController.php
@@ -62,6 +62,8 @@
 use ITILFollowup;
 use ITILSolution;
 use Location;
+use OLA;
+use OlaLevel;
 use Planning;
 use PlanningEventCategory;
 use PlanningExternalEvent;
@@ -71,6 +73,8 @@
 use RecurrentChange;
 use RequestType;
 use Session;
+use SLA;
+use SlaLevel;
 use TaskCategory;
 use Ticket;
 use TicketRecurrent;
@@ -202,6 +206,39 @@ public static function getRawKnownSchemas(): array
                     'type' => Doc\Schema::TYPE_INTEGER,
                     'readOnly' => true,
                 ],
+                'begin_waiting_date' => [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'readOnly' => true,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                ],
+                'waiting_duration' => [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_INTEGER,
+                    'readOnly' => true,
+                    'description' => 'Total waiting duration in seconds',
+                ],
+                'resolution_duration' => [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_INTEGER,
+                    'readOnly' => true,
+                    'x-field' => 'solve_delay_stat',
+                    'description' => 'Total resolution duration in seconds',
+                ],
+                'close_duration' => [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_INTEGER,
+                    'readOnly' => true,
+                    'x-field' => 'close_delay_stat',
+                    'description' => 'Total close duration in seconds',
+                ],
+                'resolution_date' => [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                    'readOnly' => true,
+                    'x-field' => 'time_to_resolve',
+                ],
                 'date_creation' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
                 'date_mod' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
                 'date' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
@@ -388,6 +425,66 @@ public static function getRawKnownSchemas(): array
                     'type' => Doc\Schema::TYPE_STRING,
                 ];
                 $schemas[$itil_type]['properties']['request_type'] = self::getDropdownTypeSchema(class: RequestType::class, full_schema: 'RequestType');
+
+                // SLA/OLA Properties
+                $schemas[$itil_type]['properties']['take_into_account_date'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                    'readOnly' => true,
+                    'x-field' => 'takeintoaccountdate',
+                ];
+                $schemas[$itil_type]['properties']['take_into_account_duration'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_INTEGER,
+                    'readOnly' => true,
+                    'description' => 'Total take into account duration in seconds',
+                    'x-field' => 'takeintoaccount_delay_stat',
+                ];
+                $schemas[$itil_type]['properties']['sla_ttr'] = self::getDropdownTypeSchema(class: SLA::class, field: 'slas_id_ttr', full_schema: 'SLA') + ['x-version-introduced' => '2.1.0'];
+                $schemas[$itil_type]['properties']['sla_tto'] = self::getDropdownTypeSchema(class: SLA::class, field: 'slas_id_tto', full_schema: 'SLA') + ['x-version-introduced' => '2.1.0'];
+                $schemas[$itil_type]['properties']['ola_ttr'] = self::getDropdownTypeSchema(class: OLA::class, field: 'olas_id_ttr', full_schema: 'OLA') + ['x-version-introduced' => '2.1.0'];
+                $schemas[$itil_type]['properties']['ola_tto'] = self::getDropdownTypeSchema(class: OLA::class, field: 'olas_id_tto', full_schema: 'OLA') + ['x-version-introduced' => '2.1.0'];
+                $schemas[$itil_type]['properties']['sla_level_ttr'] = self::getDropdownTypeSchema(class: SlaLevel::class, field: 'slalevels_id_ttr', full_schema: 'SLALevel') + ['x-version-introduced' => '2.1.0'];
+                $schemas[$itil_type]['properties']['ola_level_ttr'] = self::getDropdownTypeSchema(class: OlaLevel::class, field: 'olalevels_id_ttr', full_schema: 'OLALevel') + ['x-version-introduced' => '2.1.0'];
+                $schemas[$itil_type]['properties']['sla_waiting_duration'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_INTEGER,
+                    'readOnly' => true,
+                    'description' => 'Total SLA waiting duration in seconds',
+                ];
+                $schemas[$itil_type]['properties']['ola_waiting_duration'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_INTEGER,
+                    'readOnly' => true,
+                    'description' => 'Total OLA waiting duration in seconds',
+                ];
+                $schemas[$itil_type]['properties']['ola_ttr_begin_date'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'readOnly' => true,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                ];
+                $schemas[$itil_type]['properties']['ola_tto_begin_date'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'readOnly' => true,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                ];
+                $schemas[$itil_type]['properties']['internal_resolution_date'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                    'readOnly' => true,
+                    'x-field' => 'internal_time_to_resolve',
+                ];
+                $schemas[$itil_type]['properties']['internal_take_into_account_date'] = [
+                    'x-version-introduced' => '2.1.0',
+                    'type' => Doc\Schema::TYPE_STRING,
+                    'format' => Doc\Schema::FORMAT_STRING_DATE_TIME,
+                    'readOnly' => true,
+                    'x-field' => 'internal_time_to_own',
+                ];
             }
             if ($itil_type === Ticket::class || $itil_type === Change::class) {
                 $schemas[$itil_type]['properties']['global_validation'] = [
diff --git a/src/Glpi/Api/HL/Controller/SetupController.php b/src/Glpi/Api/HL/Controller/SetupController.php
index 702510d8ada..dbd6a165e2a 100644
--- a/src/Glpi/Api/HL/Controller/SetupController.php
+++ b/src/Glpi/Api/HL/Controller/SetupController.php
@@ -36,8 +36,10 @@
 namespace Glpi\Api\HL\Controller;
 
 use AuthLDAP;
+use Calendar;
 use CommonDBTM;
 use Config;
+use Entity;
 use Glpi\Api\HL\Doc as Doc;
 use Glpi\Api\HL\Middleware\ResultFormatterMiddleware;
 use Glpi\Api\HL\ResourceAccessor;
@@ -46,6 +48,11 @@
 use Glpi\Http\JSONResponse;
 use Glpi\Http\Request;
 use Glpi\Http\Response;
+use OLA;
+use OlaLevel;
+use SLA;
+use SlaLevel;
+use SLM;
 
 #[Route(path: '/Setup', tags: ['Setup'])]
 final class SetupController extends AbstractController
@@ -54,6 +61,70 @@ public static function getRawKnownSchemas(): array
     {
         global $DB;
 
+        $base_la_properties = [
+            'id' => [
+                'type' => Doc\Schema::TYPE_INTEGER,
+                'format' => Doc\Schema::FORMAT_INTEGER_INT64,
+                'readOnly' => true,
+            ],
+            'name' => ['type' => Doc\Schema::TYPE_STRING],
+            'slm' => self::getDropdownTypeSchema(class: SLM::class, full_schema: 'SLM'),
+            'entity' => self::getDropdownTypeSchema(class: Entity::class, full_schema: 'Entity'),
+            'is_recursive' => ['type' => Doc\Schema::TYPE_BOOLEAN],
+            'type' => [
+                'type' => Doc\Schema::TYPE_INTEGER,
+                'enum' => [SLM::TTR, SLM::TTO],
+                'description' => <<<EOT
+                - 0: Time to resolve (TTR)
+                - 1: Time to own (TTO)
+EOT,
+            ],
+            'comment' => ['type' => Doc\Schema::TYPE_STRING],
+            'time' => [
+                'type' => Doc\Schema::TYPE_INTEGER,
+                'x-field' => 'number_time',
+                'description' => 'Time in the unit defined by the time_unit property',
+            ],
+            'time_unit' => [
+                'type' => Doc\Schema::TYPE_STRING,
+                'enum' => ['minute', 'hour', 'day', 'month'],
+                'description' => 'Unit of time for the time property',
+            ],
+            'use_ticket_calendar' => ['type' => Doc\Schema::TYPE_BOOLEAN],
+            'calendar' => self::getDropdownTypeSchema(class: Calendar::class, full_schema: 'Calendar'),
+            'end_of_working_day' => [
+                'type' => Doc\Schema::TYPE_BOOLEAN,
+                'description' => 'Whether the time computation will target the end of the working day',
+            ],
+            'date_creation' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
+            'date_mod' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
+        ];
+
+        $base_la_level_properties = [
+            'id' => [
+                'type' => Doc\Schema::TYPE_INTEGER,
+                'format' => Doc\Schema::FORMAT_INTEGER_INT64,
+                'readOnly' => true,
+            ],
+            'uuid' => [
+                'type' => Doc\Schema::TYPE_STRING,
+                'pattern' => Doc\Schema::PATTERN_UUIDV4,
+                'readOnly' => true,
+            ],
+            'name' => ['type' => Doc\Schema::TYPE_STRING],
+            'entity' => self::getDropdownTypeSchema(class: Entity::class, full_schema: 'Entity'),
+            'is_recursive' => ['type' => Doc\Schema::TYPE_BOOLEAN],
+            'execution_time' => [
+                'type' => Doc\Schema::TYPE_INTEGER,
+                'readOnly' => true,
+            ],
+            'operator' => [
+                'type' => Doc\Schema::TYPE_STRING,
+                'enum' => ['AND', 'OR'],
+                'x-field' => 'match',
+            ],
+        ];
+
         return [
             'LDAPDirectory' => [
                 'x-version-introduced' => '2.0',
@@ -145,6 +216,54 @@ public static function getRawKnownSchemas(): array
                     },
                 ],
             ],
+            'SLM' => [
+                'x-version-introduced' => '2.1.0',
+                'x-itemtype' => SLM::class,
+                'type' => Doc\Schema::TYPE_OBJECT,
+                'properties' => [
+                    'id' => [
+                        'type' => Doc\Schema::TYPE_INTEGER,
+                        'format' => Doc\Schema::FORMAT_INTEGER_INT64,
+                        'readOnly' => true,
+                    ],
+                    'name' => ['type' => Doc\Schema::TYPE_STRING],
+                    'entity' => self::getDropdownTypeSchema(class: Entity::class, full_schema: 'Entity'),
+                    'is_recursive' => ['type' => Doc\Schema::TYPE_BOOLEAN],
+                    'comment' => ['type' => Doc\Schema::TYPE_STRING],
+                    'use_ticket_calendar' => ['type' => Doc\Schema::TYPE_BOOLEAN],
+                    'calendar' => self::getDropdownTypeSchema(class: Calendar::class, full_schema: 'Calendar'),
+                    'date_creation' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
+                    'date_mod' => ['type' => Doc\Schema::TYPE_STRING, 'format' => Doc\Schema::FORMAT_STRING_DATE_TIME],
+                ],
+            ],
+            'SLA' => [
+                'x-version-introduced' => '2.1.0',
+                'x-itemtype' => SLA::class,
+                'type' => Doc\Schema::TYPE_OBJECT,
+                'properties' => $base_la_properties,
+            ],
+            'OLA' => [
+                'x-version-introduced' => '2.1.0',
+                'x-itemtype' => OLA::class,
+                'type' => Doc\Schema::TYPE_OBJECT,
+                'properties' => $base_la_properties,
+            ],
+            'SLALevel' => [
+                'x-version-introduced' => '2.1.0',
+                'x-itemtype' => SlaLevel::class,
+                'type' => Doc\Schema::TYPE_OBJECT,
+                'properties' => $base_la_level_properties + [
+                    'sla' => self::getDropdownTypeSchema(class: SLA::class, full_schema: 'SLA'),
+                ],
+            ],
+            'OLALevel' => [
+                'x-version-introduced' => '2.1.0',
+                'x-itemtype' => OlaLevel::class,
+                'type' => Doc\Schema::TYPE_OBJECT,
+                'properties' => $base_la_level_properties + [
+                    'ola' => self::getDropdownTypeSchema(class: OLA::class, full_schema: 'OLA'),
+                ],
+            ],
         ];
     }