Transaction not yet indexed

668gYDCMupSKqC7Qk5s4iKYd7C2jeM3FahCDeFHWkHAFJ6D7kGPW3NaxbFdP21CFD9Twcgp2MP9eAGPhxUv2nCqj

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