Transaction not yet indexed

MdMC4vabQh75L3uGZdGXFFDzftEnFQyyEXJt1FMxhDK66jE2cVJnMACgnkUJRZQXS7E3bbvxcotFhdF9pgqK7Ke

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