Transaction not yet indexed

668PUUsfS84JgovMYZr2tAgzfifZPMgr4px8B8dsQWfwQDChUEXNsqn2XgeJsGiZtS5Nh4CwMohrCfxc5BxGpXMX

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