Transaction not yet indexed

4c21pVaKtFC9KeETqq1tF59CsZaqJGWycdNopMW16nNFF6jcaRPpAYyxe1RouaFVTPL6eFujxK1Lw4koPhX64Ub7

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