Transaction not yet indexed

5K21bsrTkdfFurhyVAmoDDNkFJvfW2tUzeqgT2YoA3oiMTP8CDUkkeefsKFwMyQnB5VczqhBk9nRGxQHZL2x1ht4

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