[fix] Change Sample Item Error Message to Zero Valuation Rate (#10935)

Change Sample Item Error Message to Zero Valuation Rate
diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index 7c6b34b..180ccbb 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -461,6 +461,6 @@
 	if not allow_zero_rate and not valuation_rate \
 			and cint(erpnext.is_perpetual_inventory_enabled(company)):
 		frappe.local.message_log = []
-		frappe.throw(_("Valuation rate not found for the Item {0}, which is required to do accounting entries for {1} {2}. If the item is transacting as a sample item in the {1}, please mention that in the {1} Item table. Otherwise, please create an incoming stock transaction for the item or mention valuation rate in the Item record, and then try submiting/cancelling this entry").format(item_code, voucher_type, voucher_no))
+		frappe.throw(_("Valuation rate not found for the Item {0}, which is required to do accounting entries for {1} {2}. If the item is transacting as a zero valuation rate item in the {1}, please mention that in the {1} Item table. Otherwise, please create an incoming stock transaction for the item or mention valuation rate in the Item record, and then try submiting/cancelling this entry").format(item_code, voucher_type, voucher_no))
 
 	return valuation_rate