Transaction not yet indexed

21CdvunkdcDwGVC4YCsq6qodkUq6KUithyPcQyjpVH7wwJP5RFQME9wP9uvpFy9n7fYDmyWLA9dVUs4AAgh663nz

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