fix: pos item search includes non stock items (#23914)

* fix: pos item search includes non stock items

* chore: add validation for non stock items

erpnext/accounts/doctype/pos_invoice/pos_invoice.py

@@ -39,6 +39,7 @@ class POSInvoice(SalesInvoice):
 		self.validate_serialised_or_batched_item()
 		self.validate_stock_availablility()
 		self.validate_return_items_qty()
+		self.validate_non_stock_items()
 		self.set_status()
 		self.set_account_for_mode_of_payment()
 		self.validate_pos()
@@ -174,6 +175,14 @@ class POSInvoice(SalesInvoice):
 							_("Row #{}: Serial No {} cannot be returned since it was not transacted in original invoice {}")
 							.format(d.idx, bold_serial_no, bold_return_against)
 						)
+	
+	def validate_non_stock_items(self):
+		for d in self.get("items"):
+			is_stock_item = frappe.get_cached_value("Item", d.get("item_code"), "is_stock_item")
+			if not is_stock_item:
+				frappe.throw(_("Row #{}: Item {} is a non stock item. You can only include stock items in a POS Invoice. ").format(
+					d.idx, frappe.bold(d.item_code)
+				), title=_("Invalid Item"))
 
 	def validate_mode_of_payment(self):
 		if len(self.payments) == 0:

erpnext/selling/page/point_of_sale/point_of_sale.py

@@ -62,6 +62,7 @@ def get_items(start, page_length, price_list, item_group, pos_profile, search_va
 			`tabItem` item {bin_join_selection}
 		WHERE
 			item.disabled = 0
+			AND item.is_stock_item = 1
 			AND item.has_variants = 0
 			AND item.is_sales_item = 1
 			AND item.is_fixed_asset = 0