Transaction not yet indexed

421MSd6rf4Z1aUvJASGWBKFNcWQHfPmYekyM6CrD5qqP4zYNnatJekkB5TGoUTd9WSJZzqfXnfc2PHU3ySxmh4E4

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