Transaction not yet indexed

Am4w8eiNKR3rSwDrFPNPz4dWtaapRJdoFUuzVg5VRKv142xxwmNVsd59QVzLE5BpytcqQWpKu5FE3bfYNVuu2Yz

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