diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 94b553e2f99..eb483bdb868 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -3706,6 +3706,9 @@ def update_child_qty_rate(parent_doctype, trans_items, parent_doctype_name, chil
 		if d.get("schedule_date") and parent_doctype == "Purchase Order":
 			child_item.schedule_date = d.get("schedule_date")
 
+		if d.get("bom_no") and parent_doctype == "Sales Order":
+			child_item.bom_no = d.get("bom_no")
+
 		if flt(child_item.price_list_rate):
 			if flt(child_item.rate) > flt(child_item.price_list_rate):
 				#  if rate is greater than price_list_rate, set margin
diff --git a/erpnext/public/js/utils.js b/erpnext/public/js/utils.js
index cd851b57972..c0126f2c6ee 100755
--- a/erpnext/public/js/utils.js
+++ b/erpnext/public/js/utils.js
@@ -692,7 +692,7 @@ erpnext.utils.update_child_items = function (opts) {
 					},
 					callback: function (r) {
 						if (r.message) {
-							const { qty, price_list_rate: rate, uom, conversion_factor } = r.message;
+							const { qty, price_list_rate: rate, uom, conversion_factor, bom_no } = r.message;
 
 							const row = dialog.fields_dict.trans_items.df.data.find(
 								(doc) => doc.idx == me.doc.idx
@@ -703,6 +703,7 @@ erpnext.utils.update_child_items = function (opts) {
 									uom: me.doc.uom || uom,
 									qty: me.doc.qty || qty,
 									rate: me.doc.rate || rate,
+									bom_no: bom_no,
 								});
 								dialog.fields_dict.trans_items.grid.refresh();
 							}