Transaction not yet indexed

ngpZtFUCxTtpqUtSjhFuqZk7ca2vSygWfeHhua3xaXPf3uwGcyvjbP5GPNW7dsRHVjNjS8wbgAwsiYCQooCe1X1

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