Transaction not yet indexed

Nfk456o7ZfZpgCBWpSRFEAkgQUwGVqLna3zsf1LdnTttzGWX1hK1BWHEmstAs8UVJeyKakBMMZo5MeVCcm6ECwi

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