Transaction not yet indexed

ex8R9REdJ6NPtvxJ5sD66TWkDT6G8HG1zvkMGTuCyUCSbBVvm7ABgE7PLp3M3zf7pacVmYY8iJhLkYC2F6Gmuu7

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