Transaction not yet indexed

So28dLx5b2ta5DxSFvCRvBcJFp489uAMTE8cKZktEmHf4FW7jN5BiGtYCEzZD8AFRwVf6oV4ZEN7m6Qyizakjx9

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