Transaction not yet indexed

NACK6rPwQPt8hfzwcfBNaAJV2tj8bc54P4bGdJFaiiFxbLtoBU3uyWaSmwvoFEcqHeMF5ExuUtSiXFDi4Kq5NNp

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