Transaction not yet indexed

521PaaBvRgoXp5VLD7ydDMZi6N9iqV8oeiuqpvbCSXkMGihWtzPrKou4pFS2wFN4jhynVnd5kKKKfAxSqbkXiSuU

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