Transaction not yet indexed

668WPWkY9gLcs2mLKfJr4h9yZuoavgtd8s5ASMd4LoJvY1jDf3j6Mxns37RFenFHUNgXhrsApYie1dUGPRj7Xp1U

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