Transaction not yet indexed

668rmEFD2jkiXPwhgQ3hAxP5AUNDnCL23YLYcTvCo1dNPF6zrBHSfkA2VjR3Y4B5gYpTzXhvqMpsyLBcvEmVfAg1

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