# Types of transactions

<table data-full-width="true"><thead><tr><th width="205" align="center">Code</th><th align="center">Description</th></tr></thead><tbody><tr><td align="center">in</td><td align="center">Writing off amounts from the user’s card</td></tr><tr><td align="center">out</td><td align="center">Withdrawal of funds from the project's account to the user's card</td></tr><tr><td align="center">one_click_pay_in</td><td align="center">Writing off amounts from the saved user’s card</td></tr><tr><td align="center">one_click_pay_out</td><td align="center">Withdrawal of funds from the project's account to the saved user's card</td></tr><tr><td align="center">refund</td><td align="center">Refund</td></tr><tr><td align="center">google_pay</td><td align="center">Payment using Google Pay technology</td></tr><tr><td align="center">apple_pay</td><td align="center">Payment using Apple Pay technology</td></tr><tr><td align="center">card_link</td><td align="center">Linking of the user's card in the payment system (used for payments without notice)</td></tr></tbody></table>