Transaction not yet indexed

NpM2nHCJC2mRuWV5VRdg6RfVQHcfnC8Ugo87LrFRomU4REicvbGcfWSauKPxs1hMxiqwj1pm8Tj1wn5RUfTMspZ

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