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 87cf1ae80d6..5e7a75b8a3f 100644
--- a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.json
+++ b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.json
@@ -867,7 +867,8 @@
    "label": "Purchase Order",
    "options": "Purchase Order",
    "print_hide": 1,
-   "read_only": 1
+   "read_only": 1,
+   "search_index": 1
   },
   {
    "fieldname": "column_break_92",
@@ -892,7 +893,7 @@
  "idx": 1,
  "istable": 1,
  "links": [],
- "modified": "2023-11-14 18:34:10.479329",
+ "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 09b73878aa2..43e8e41f7f3 100644
--- a/erpnext/selling/doctype/sales_order/sales_order.json
+++ b/erpnext/selling/doctype/sales_order/sales_order.json
@@ -1138,7 +1138,8 @@
    "hide_seconds": 1,
    "label": "Inter Company Order Reference",
    "options": "Purchase Order",
-   "read_only": 1
+   "read_only": 1,
+   "search_index": 1
   },
   {
    "fieldname": "project",
@@ -1631,7 +1632,7 @@
  "idx": 105,
  "is_submittable": 1,
  "links": [],
- "modified": "2024-03-20 16:04:43.627183",
+ "modified": "2024-05-23 16:35:54.905804",
  "modified_by": "Administrator",
  "module": "Selling",
  "name": "Sales Order",
@@ -1710,4 +1711,4 @@
  "title_field": "customer_name",
  "track_changes": 1,
  "track_seen": 1
-}
\ No newline at end of file
+}