Transaction not yet indexed

21Gk54SKPUpRqVbnc7BB3fQud5XgTCDxCm5hJVyzV942Z6DLftM2fiPoQZ1NMLUb2jbZ8LcghFUTQec12hTEYMNA

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