Transaction not yet indexed

Nng6AaTustrx4AxkYKbhTaS7jo4e5eESXkkTmPtaojRHxz7BiVPt4RozFGbvakkYgWfrmPq7MEw3RpC6Dtm3quP

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