Transaction not yet indexed

Hg21tpPPbi7ErQTLpoeEcbhdEo3Ct4wnxWA9LbBpmEfg77v7DTZRw1EE1yWxM71hYMSjnxCsLreoMMJppqMp81s

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