Transaction not yet indexed

21Uk4jU3SpM54BkyV9hjuLJbzPpbDqy1HwwLGQdyf2BXbTWBbNvmujsQacVip9xKnaKcbw6ZkJHccFFQXA3WfUm8

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