For regulatory reasons, some currencies require you to make a deposit in that same currency before you can withdraw.
Example: If you’ve received a bonus in Japanese Yen (¥), you’ll need to make a deposit in Japanese Yen before you can withdraw any funds in that currency.
This rule does not apply to all currencies.
Example: If you’ve received a bonus in USDT, you can withdraw your USDT without making a deposit, as long as you’ve provided your cryptocurrency wallet address.