Fixed issue with misleading error message on Stock Entry creation of Serialized Items
diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index 10722cc..948a626 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -443,7 +443,7 @@
 
 	if not allow_zero_rate and not valuation_rate \
 			and cint(frappe.db.get_value("Accounts Settings", None, "auto_accounting_for_stock")):
-			
+		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))
 
 	return valuation_rate