diff --git a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.json b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.json
index 4283b961c7cd6e3bd45f288d716a75f52ffef00d..333cf44648723f8182f498a36b0f9de4e4ffede5 100644
--- a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.json
+++ b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.json
@@ -896,7 +896,8 @@
    "label": "Purchase Order",
    "options": "Purchase Order",
    "print_hide": 1,
-   "read_only": 1
+   "read_only": 1,
+   "search_index": 1
   },
   {
    "fieldname": "column_break_92",
@@ -952,7 +953,7 @@
  "idx": 1,
  "istable": 1,
  "links": [],
- "modified": "2024-02-25 15:56:44.828634",
+ "modified": "2024-05-23 16:36:18.970862",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Sales Invoice Item",
diff --git a/erpnext/selling/doctype/sales_order/sales_order.json b/erpnext/selling/doctype/sales_order/sales_order.json
index 845fc9b5d1061be8075309e12acc2e2f05dfdaa2..5972984d4cbe4aef437d25d7c3b677fbd4af300a 100644
--- a/erpnext/selling/doctype/sales_order/sales_order.json
+++ b/erpnext/selling/doctype/sales_order/sales_order.json
@@ -1148,7 +1148,8 @@
    "hide_seconds": 1,
    "label": "Inter Company Order Reference",
    "options": "Purchase Order",
-   "read_only": 1
+   "read_only": 1,
+   "search_index": 1
   },
   {
    "fieldname": "project",
@@ -1697,7 +1698,7 @@
  "idx": 105,
  "is_submittable": 1,
  "links": [],
- "modified": "2024-05-20 14:21:12.427725",
+ "modified": "2024-05-23 16:35:54.905804",
  "modified_by": "Administrator",
  "module": "Selling",
  "name": "Sales Order",