Transaction not yet indexed

Am6Z7PVvMBFr2cdacRDKRBJ8dsWrBfFzAoTTwJrvQXtntMbQpn29PcDBWafRkH9UEh7TkFeXerUx3AB8kyQHAM5

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