Transaction not yet indexed

Ud91yyGeRBYSTgkEPpXFfydW8efcaXGyH2sdeA7tFKDkEZz2z555R9LunMeAJze3MNAqTLwgcK3myx8rhLbnUjp

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