Transaction not yet indexed

52b21bTpjPbwWB3df8KQsWeUJnAvKbeZEH7gxWZJvEfV6S7SbGTZQntyuYbPMLcpYDk1t2k5dnMzrPbn4KgfdFy2

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