Transaction not yet indexed

5S21QhLzXqpAqKMsK5eQua43A1jzYPxHAvn7LQV17MGGdyVebE3NAzWZzDh374kMv7FeY3RCdrmokgwjVnrJH4hS

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