Transaction not yet indexed

668SMZS8Qz5fSANB1FFcdBvaM93oxeyqHTSXaeqpA7yVE3KZdE4msb4wCKWJ9yRQttVtwcPfxXqrDp5BfHhdwXKF

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