Transaction not yet indexed

668dVWM4HT3nvqZua4eFGFvbRV4bThue3d7M7gvq7HUBq8L4x8i5fwev8Ga6dyz9G5p9mFBV5QMN2ZquAG2nPfok

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