diff --git a/erpnext/selling/page/point_of_sale/point_of_sale.js b/erpnext/selling/page/point_of_sale/point_of_sale.js
index ec1a292..1b67ff2 100644
--- a/erpnext/selling/page/point_of_sale/point_of_sale.js
+++ b/erpnext/selling/page/point_of_sale/point_of_sale.js
@@ -21,7 +21,9 @@
 };
 
 frappe.pages['point-of-sale'].refresh = function(wrapper) {
-	cur_frm = wrapper.pos.frm;
+	if (wrapper.pos) {
+		cur_frm = wrapper.pos.frm;
+	}
 }
 
 erpnext.pos.PointOfSale = class PointOfSale {
@@ -742,7 +744,7 @@
 
 		this.wrapper.find('.discount_amount').on('change', (e) => {
 			frappe.model.set_value(this.frm.doctype, this.frm.docname,
-				'discount_amount', e.target.value);
+				'discount_amount', flt(e.target.value));
 			this.frm.trigger('discount_amount')
 				.then(() => {
 					let discount_wrapper = this.wrapper.find('.additional_discount_percentage');
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 8ed288b..fd6b8c9 100644
--- a/erpnext/selling/page/point_of_sale/point_of_sale.py
+++ b/erpnext/selling/page/point_of_sale/point_of_sale.py
@@ -31,7 +31,7 @@
 		ON
 			(item_det.item_code=i.name or item_det.item_code=i.variant_of)
 		where
-			i.disabled = 0 and i.has_variants = 0
+			i.disabled = 0 and i.has_variants = 0 and i.is_sales_item = 1
 			and i.item_group in (select name from `tabItem Group` where lft >= {lft} and rgt <= {rgt})
 			and (i.item_code like %(item_code)s
 			or i.item_name like %(item_code)s or i.barcode like %(item_code)s)