Transaction not yet indexed

421UDF7uFnR2RC6dWNaagb2LjvnpwwmH6J7QDAeram31z6ZG5MVBqBhKzzmhtgCT7wV22gWFP9an8KA5Hd8JSSvp

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