Transaction not yet indexed

21knAgBxbeRpzPQATVZnzZrTqeqZTiaF7pJ4HqVipH7SWR5Jdpjd2VjTiyqZQ66mZ3HbHpMRc3mnwSMEA38ApiqZ

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.