Transaction not yet indexed

668UVovwQhfX4PzmAtzgZDEV3wSkwATD94xmqiBfmddnt1j3iWHkYVwfohFRUdyaR1Um5AFTNWPHnGeKXjc8gTRC

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