diff --git a/erpnext/selling/page/point_of_sale/point_of_sale.py b/erpnext/selling/page/point_of_sale/point_of_sale.py
index 993c61d..67948d7 100644
--- a/erpnext/selling/page/point_of_sale/point_of_sale.py
+++ b/erpnext/selling/page/point_of_sale/point_of_sale.py
@@ -8,7 +8,7 @@
 from frappe.utils.nestedset import get_root_of
 
 from erpnext.accounts.doctype.pos_invoice.pos_invoice import get_stock_availability
-from erpnext.accounts.doctype.pos_profile.pos_profile import get_item_groups
+from erpnext.accounts.doctype.pos_profile.pos_profile import get_child_nodes, get_item_groups
 
 
 def search_by_term(search_term, warehouse, price_list):
@@ -275,3 +275,16 @@
 		contact_doc.set('phone_nos', [{ 'phone': value, 'is_primary_mobile_no': 1}])
 		frappe.db.set_value('Customer', customer, 'mobile_no', value)
 	contact_doc.save()
+
+@frappe.whitelist()
+def get_pos_profile_data(pos_profile):
+	pos_profile = frappe.get_doc('POS Profile', pos_profile)
+	pos_profile = pos_profile.as_dict()
+
+	_customer_groups_with_children = []
+	for row in pos_profile.customer_groups:
+		children = get_child_nodes('Customer Group', row.customer_group)
+		_customer_groups_with_children.extend(children)
+
+	pos_profile.customer_groups = _customer_groups_with_children
+	return pos_profile
\ No newline at end of file
diff --git a/erpnext/selling/page/point_of_sale/pos_controller.js b/erpnext/selling/page/point_of_sale/pos_controller.js
index ea8459f..d66c6e4 100644
--- a/erpnext/selling/page/point_of_sale/pos_controller.js
+++ b/erpnext/selling/page/point_of_sale/pos_controller.js
@@ -119,10 +119,15 @@
 			this.allow_negative_stock = flt(message.allow_negative_stock) || false;
 		});
 
-		frappe.db.get_doc("POS Profile", this.pos_profile).then((profile) => {
-			Object.assign(this.settings, profile);
-			this.settings.customer_groups = profile.customer_groups.map(group => group.customer_group);
-			this.make_app();
+		frappe.call({
+			method: "erpnext.selling.page.point_of_sale.point_of_sale.get_pos_profile_data",
+			args: { "pos_profile": this.pos_profile },
+			callback: (res) => {
+				const profile = res.message;
+				Object.assign(this.settings, profile);
+				this.settings.customer_groups = profile.customer_groups.map(group => group.name);
+				this.make_app();
+			}
 		});
 	}