Transaction not yet indexed

5u16umkGpntNe4seqeN65QmYqjCLGGc4dRTt44PoEYLE7LH3RDMV29omNyK6MMNdk9cbfHTgEy7XtAuK7Kt21DuT

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