Get Payment Schedule from Sales Order to Sales Invoice (#13497)

diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index 8c27a97..40c2cf0 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -587,6 +587,10 @@
 		"Sales Team": {
 			"doctype": "Sales Team",
 			"add_if_empty": True
+		},
+		"Payment Schedule": {
+			"doctype": "Payment Schedule",
+			"add_if_empty": True
 		}
 	}, target_doc, postprocess, ignore_permissions=ignore_permissions)