Transaction not yet indexed

21SZLZbQufuFyYSzHPZepkvTfY2eCpqEWaFpXhBbqDHg5yiWtSpSmEyF1N4Knh2hzFF5DkZpMBKJSagk5XUKzTgY

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