Tether (USDT), known as a stablecoin, is not only issued as ERC-20 on the Ethereum network, but also on the BSC and Tron networks. In this case, you must specify the network selection correctly when making the transfer. For example, even if the name of the asset is the same USDT token, if you transfer USDT issued in ERC-20 to BEP-20, you will lose the asset because the network is different.