Transaction not yet indexed

21NSDmNknnUXvSb3kkYixNrGy8Q8VYtTsPfHdSW3eQjMh9bHMisWmqQcBBTw2bfBk7ziL5wwez6P6riXnZnUGREE

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