Transaction not yet indexed

MffFv4VNNQ6BRefoTXGkL3aQNhcArPqMRdKXmJZiHmoiTSx9etDPeJMSa4SqwGwjTn1koJS7HH5y5hQF1eMikmv

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