Transaction not yet indexed

6668yyDEmAt5q4fvPDQAvT1mPiTNmnyYeg4WfG5kRFtkrwv3LsdEWcCkLWRyzfNLTDu4QsNGNkjrykYbs6erZESR

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