Transaction not yet indexed

NmLU88nNcbKbjZEfFmap5Bva5Gt5eZh9PyVmqk2VqRTVDvY2tXzBtCzP7vtYxgnjo7gnNDA7TAJM2yANr3Rwrvv

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