Transaction not yet indexed

21UnfWb4MS2syXqKS5DWndjAGf2nnBYvrNH4MASTnhBYjvXWhoHT4ZtBTu1RRXpwdpfRoVkkbnJsVPFvZcwpw67H

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