Transaction not yet indexed

5u21JFktf2CVBYFBmf4eZud8c3PK4nkmahS6aVh9mUtHg6BGP5r4cNTzF6536azbbkLPdTQp6FoqB9NKuorvWr68

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