Transaction not yet indexed

MLPmZ9f3rKvxwrWSerWERySNbKo9ciXsoTzcj4xTPm5g1uAVRRMnMyz6Dqc63vikQSr2YSkNPR2BGZqL16DYU17

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