Transaction not yet indexed

MC6LWEYQH6cvUhYLHCyGkVbFNdpTZF7BLJkdHiDNxB3ujevnu13XTPsZM3QL6SMQAAcaW878geHmV9BfnSjHiw1

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