diff --git a/src/controller/area.controller.js b/src/controller/area.controller.js
index ce0b6fd..6c671aa 100644
--- a/src/controller/area.controller.js
+++ b/src/controller/area.controller.js
@@ -102,4 +102,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getAreaRowsByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const areaData = await Area.findById(id).populate("rows");
+      if (!areaData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: areaData.rows });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/area.router.js b/src/controller/area.router.js
index e4c2bdd..15a4896 100644
--- a/src/controller/area.router.js
+++ b/src/controller/area.router.js
@@ -11,6 +11,11 @@ router.get("/all", controller.getAllArea);
  */
 router.get("/:id", controller.getAreaByID);
 
+/**
+ * @route /area/:id/rows
+ */
+router.get("/:id/rows", controller.getAreaRowsByID);
+
 /**
  * @route /area/
  */
diff --git a/src/controller/bay.controller.js b/src/controller/bay.controller.js
index be0c2ed..44d8cf5 100644
--- a/src/controller/bay.controller.js
+++ b/src/controller/bay.controller.js
@@ -104,4 +104,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getBayLevelsByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const bayData = await Bay.findById(id).populate("levels");
+      if (!bayData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: bayData.levels });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/bay.router.js b/src/controller/bay.router.js
index fd27dd2..080c5fe 100644
--- a/src/controller/bay.router.js
+++ b/src/controller/bay.router.js
@@ -12,6 +12,11 @@ router.get("/all", controller.getAllBay);
  */
 router.get("/:id", controller.getBayByID);
 
+/**
+ * @route /bay/:id/levels
+ */
+router.get("/:id/levels", controller.getBayLevelsByID);
+
 /**
  * @route /bay/
  */
diff --git a/src/controller/level.controller.js b/src/controller/level.controller.js
index 2be1b21..6680186 100644
--- a/src/controller/level.controller.js
+++ b/src/controller/level.controller.js
@@ -102,4 +102,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getLevelSublevelsByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const levelData = await Level.findById(id).populate({ path: "sub_levels", populate: { path: "sub_level_id" } });
+      if (!levelData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: levelData.sub_levels });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/level.router.js b/src/controller/level.router.js
index f3a6846..3631d4c 100644
--- a/src/controller/level.router.js
+++ b/src/controller/level.router.js
@@ -12,6 +12,11 @@ router.get("/all", controller.getAllLevel);
  */
 router.get("/:id", controller.getLevelByID);
 
+/**
+ * @route /level/:id/sublevels
+ */
+router.get("/:id/sublevels", controller.getLevelSublevelsByID);
+
 /**
  * @route /level/
  */
diff --git a/src/controller/row.controller.js b/src/controller/row.controller.js
index 77f9182..11c3479 100644
--- a/src/controller/row.controller.js
+++ b/src/controller/row.controller.js
@@ -102,4 +102,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getRowBaysByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const rowData = await Row.findById(id).populate("bays");
+      if (!rowData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: rowData.bays });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/row.router.js b/src/controller/row.router.js
index fbf91be..d2593e5 100644
--- a/src/controller/row.router.js
+++ b/src/controller/row.router.js
@@ -12,6 +12,11 @@ router.get("/all", controller.getAllRow);
  */
 router.get("/:id", controller.getRowByID);
 
+/**
+ * @route /row/:id/bays
+ */
+router.get("/:id/bays", controller.getRowBaysByID);
+
 /**
  * @route /row/
  */
diff --git a/src/controller/sublevel.controller.js b/src/controller/sublevel.controller.js
index 47e1672..4c353a8 100644
--- a/src/controller/sublevel.controller.js
+++ b/src/controller/sublevel.controller.js
@@ -162,4 +162,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getSubLevelChildrenByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const sublevelData = await Sublevel.findById(id).populate({ path: "sub_levels", populate: { path: "sub_level_id" } });
+      if (!sublevelData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: sublevelData.sub_levels });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/sublevel.router.js b/src/controller/sublevel.router.js
index fd0ea63..7a511b1 100644
--- a/src/controller/sublevel.router.js
+++ b/src/controller/sublevel.router.js
@@ -12,6 +12,11 @@ router.get("/all", controller.getAllSublevel);
  */
 router.get("/:id", controller.getSubLevelByID);
 
+/**
+ * @route /sublevel/:id/sublevels
+ */
+router.get("/:id/sublevels", controller.getSubLevelChildrenByID);
+
 /**
  * @route /sublevel/
  */
diff --git a/src/controller/warehouse.controller.js b/src/controller/warehouse.controller.js
index 469d2ff..53e27e9 100644
--- a/src/controller/warehouse.controller.js
+++ b/src/controller/warehouse.controller.js
@@ -124,4 +124,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getWarehouseZonesByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const warehouseData = await Warehouse.findById(id).populate("zones");
+      if (!warehouseData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: warehouseData.zones });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/warehouse.router.js b/src/controller/warehouse.router.js
index 8f6d565..776121a 100644
--- a/src/controller/warehouse.router.js
+++ b/src/controller/warehouse.router.js
@@ -12,6 +12,11 @@ router.get("/all", controller.getAllWarehouse);
  */
 router.get("/:id", controller.getWarehouseByID);
 
+/**
+ * @route /warehouse/:id/zones
+ */
+router.get("/:id/zones", controller.getWarehouseZonesByID);
+
 /**
  * @route /warehouse/
  */
diff --git a/src/controller/zone.controller.js b/src/controller/zone.controller.js
index 1625d5b..7f0d1be 100644
--- a/src/controller/zone.controller.js
+++ b/src/controller/zone.controller.js
@@ -102,4 +102,24 @@ module.exports = {
       next(error);
     }
   },
+
+  getZoneAreasByID: async (req, res, next) => {
+    const { id } = req.params;
+
+    if (!id) {
+      res.status(400).send({ success: false, message: "Missing id param" });
+      return;
+    }
+
+    try {
+      const zoneData = await Zone.findById(id).populate("areas");
+      if (!zoneData) {
+        res.status(404).send({ success: false, message: "not found" });
+        return;
+      }
+      res.send({ success: true, data: zoneData.areas });
+    } catch (error) {
+      next(error);
+    }
+  },
 };
diff --git a/src/controller/zone.router.js b/src/controller/zone.router.js
index 3ea45f1..c0977a3 100644
--- a/src/controller/zone.router.js
+++ b/src/controller/zone.router.js
@@ -12,6 +12,11 @@ router.get("/all", controller.getAllZone);
  */
 router.get("/:id", controller.getZoneByID);
 
+/**
+ * @route /zone/:id/areas
+ */
+router.get("/:id/areas", controller.getZoneAreasByID);
+
 /**
  * @route /zone/
  */