Transaction not yet indexed

666UMPCu7XMGXr4aJR1PdtQqmNP7GiLFyvF34EAHwVyS4TiWfGd1pAFE6aMrxRMEHVoVmet45khtwHxBTBH7gRtU

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