Transaction not yet indexed

21f6KY5iUmM4BbEEm49j49wCPPBTTrKu1GwW17RKZ1WzaUBA9VgoYZcp7UL1bbvZ21j2orKLo4PfRKgVN53REfsF

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