Transaction not yet indexed

Nb6MhmWtbtsv6h8XF45nevNPup4pft8o2ZRJ8kzggixb5JdTuYKPgLCHCTr3eVZi7A5p2nqVihbT1gZzq6JjPCs

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