Transaction not yet indexed

AmTgUYFAYmJ2wjcpYYCKX5N4htiAvGtxqrwcDME4KJK5iQJsPsoi9mA74NJ8FFZdJcDrwDvsQUqVNz9DoY7iRm1

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