Transaction not yet indexed

21k51URhHixLSQgEPJzusWVRdECaPVM326NLq2xvpGp3UtfVRpaZDzV4HCs1ujrhR5LNbetnj7biLzmb1JNUNRUz

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