diff --git a/erpnext/manufacturing/doctype/bom/test_bom.py b/erpnext/manufacturing/doctype/bom/test_bom.py
index 0c8359264d8..37e73c4dbe6 100644
--- a/erpnext/manufacturing/doctype/bom/test_bom.py
+++ b/erpnext/manufacturing/doctype/bom/test_bom.py
@@ -7,7 +7,7 @@ from functools import partial
 
 import frappe
 from frappe.tests import timeout
-from frappe.utils import cstr, flt
+from frappe.utils import cint, cstr, flt
 
 from erpnext.controllers.tests.test_subcontracting_controller import (
 	set_backflush_based_on,
@@ -858,6 +858,64 @@ class TestBOM(ERPNextTestSuite):
 		# the final operation's FG item is derived from the BOM's own item
 		self.assertEqual(bom.operations[1].finished_good, fg_item)
 
+	@timeout
+	def test_add_raw_materials_when_item_is_used_by_another_operation(self):
+		from erpnext.manufacturing.doctype.operation.test_operation import make_operation
+		from erpnext.manufacturing.doctype.workstation.test_workstation import make_workstation
+
+		fg_item = make_item(properties={"is_stock_item": 1}).name
+		sfg_item = make_item(properties={"is_stock_item": 1}).name
+		rm_item = make_item(properties={"is_stock_item": 1, "valuation_rate": 100.0}).name
+		make_workstation({"workstation": "_Test SFG Workstation"})
+		for operation in ("_Test SFG Operation", "_Test SFG Final Operation"):
+			make_operation({"operation": operation, "workstation": "_Test SFG Workstation"})
+
+		bom = frappe.new_doc("BOM")
+		bom.company = "_Test Company"
+		bom.item = fg_item
+		bom.quantity = 1
+		bom.with_operations = 1
+		bom.track_semi_finished_goods = 1
+		bom.append(
+			"operations",
+			{
+				"operation": "_Test SFG Operation",
+				"workstation": "_Test SFG Workstation",
+				"time_in_mins": 30,
+				"finished_good": sfg_item,
+			},
+		)
+		bom.append(
+			"operations",
+			{
+				"operation": "_Test SFG Final Operation",
+				"workstation": "_Test SFG Workstation",
+				"time_in_mins": 30,
+				"is_final_finished_good": 1,
+			},
+		)
+		bom.append("items", {"item_code": rm_item, "qty": 1, "operation_row_id": 1})
+		bom.append("items", {"item_code": sfg_item, "qty": 1, "operation_row_id": 2})
+		bom.insert()
+
+		def rows_for(item_code, operation_row_id):
+			return [
+				row
+				for row in bom.items
+				if row.item_code == item_code and cint(row.operation_row_id) == operation_row_id
+			]
+
+		# the item already used by operation 1 gets its own new row under operation 2
+		bom.add_raw_materials(2, [{"item_code": rm_item, "qty": 3}])
+		self.assertEqual(len(rows_for(rm_item, 2)), 1)
+		self.assertEqual(flt(rows_for(rm_item, 2)[0].qty), 3.0)
+		self.assertEqual(flt(rows_for(rm_item, 1)[0].qty), 1.0)
+
+		# adding it again for the same operation updates the row instead of stacking another
+		bom.add_raw_materials(2, [{"item_code": rm_item, "qty": 5}])
+		self.assertEqual(len(rows_for(rm_item, 2)), 1)
+		self.assertEqual(flt(rows_for(rm_item, 2)[0].qty), 5.0)
+
 
 def get_default_bom(item_code="_Test FG Item 2"):
 	return frappe.db.get_value("BOM", {"item": item_code, "is_active": 1, "is_default": 1})