Transaction not yet indexed

mpEB6rSxsFuLz5WAdgqRQ8Ps7Qyk2QQqpHYZmYWc2WJbb7LdEaxFKwWC89fqrqogipW2TvchxT4UsmhKRW5Qr1e

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