fix: test case added for MR internal Transfer
diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index 5a96131..e7c2db8 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -879,6 +879,50 @@
 		po.load_from_db()
 		self.assertEqual(po.status, "Completed")
 
+	def test_internal_transfer_flow_with_mr(self):
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_delivery_note,
+		)
+		from erpnext.stock.doctype.delivery_note.delivery_note import make_inter_company_purchase_receipt
+
+		frappe.db.set_value("Selling Settings", None, "maintain_same_sales_rate", 1)
+		frappe.db.set_value("Buying Settings", None, "maintain_same_rate", 1)
+
+		supplier = "_Test Internal Supplier 2"
+
+		mr = make_material_request(qty=2, company="_Test Company with perpetual inventory", warehouse="Stores - TCP1")
+		po = make_purchase_order(mr.name)
+		po.supplier = supplier
+		po.from_warehouse="_Test Internal Warehouse New 1 - TCP1",
+		po.rate=1,
+		po.save()
+		po.submit()
+
+		so = make_inter_company_sales_order(po.name)
+		so.items[0].delivery_date = today()
+		self.assertEqual(so.items[0].warehouse, "_Test Internal Warehouse New 1 - TCP1")
+		self.assertTrue(so.items[0].material_request)
+		self.assertTrue(so.items[0].material_request_item)
+		so.submit()
+
+		dn = make_delivery_note(so.name)
+		dn.items[0].target_warehouse = "_Test Internal Warehouse GIT - TCP1"
+		self.assertEqual(dn.items[0].warehouse, "_Test Internal Warehouse New 1 - TCP1")
+		self.assertTrue(dn.items[0].material_request)
+		self.assertTrue(dn.items[0].material_request_item)
+
+		self.assertEqual(mr.items[0].name, dn.items[0].material_request_item)
+		dn.submit()
+
+		pr = make_inter_company_purchase_receipt(dn.name)
+		self.assertEqual(pr.items[0].warehouse, "Stores - TCP1")
+		self.assertTrue(pr.items[0].material_request)
+		self.assertTrue(pr.items[0].material_request_item)
+		self.assertEqual(mr.items[0].name, pr.items[0].material_request_item)
+		pr.submit()
+
+		po.load_from_db()
+		self.assertEqual(mr.status, "Received")
 
 def prepare_data_for_internal_transfer():
 	from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_internal_supplier