Transaction not yet indexed

MefC9janokqrKDMqth23JLqLcuX4aNB5AWxNuegg8FULL5Ra3BmhEPnYcRMTDGDbgbyCyuE1ahhdhCPR2xUEABp

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