# Full withdrawal

On Brine, which is a spot trading system, the only forced action is a withdrawal of all the funds. This guarantees that Brine, which is a L2 application cannot block users from getting their funds, which is an essential attribute of a DeFi application.

This section describes the specific parameters of a Full Withdrawal request.

### Full Withdrawal parameters

When a User wants to perform Full Withdrawal, s/he calls the `fullWithdrawalRequest`function in Starkware contract. This function gets two parameters: `starkKey` and `vaultId`. The request is valid only if the `starkKey` parameter is associated with the Ethereum address that initiated the transaction. Otherwise, the request is rejected by the Starkware smart contract (and won’t be treated by Brine).