Transaction not yet indexed

nm4ubDDPEBYwNtTFnqvrvUsVNFCEgVE4St1fiyrss2eJGRCndzoqfC8KBNV3vBaWRNBv6NA7NaMNGhffp2siP15

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