Transaction not yet indexed

668nPBHu394SEEbZw6qZQTqcSwaUBff7nc6n2DWPT7eq8QXfvj1dDRMDdCfvsXDVT1vtPuLvo2SYS4M2CZBExCQT

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