You can either pass:

• a withdrawal address and an amount of ETH validators (1 validator = 32ETH) to unstake and we will exit validators on your behalf. This only works with validators having a 0x01 withdrawal credential.
• specific validators pubkeys, if you need more control. This works with any type of validator withdrawal credential, and is the only way to exit 0x02 validators

The endpoint will return a list of validators that will be exited together with estimates for exit and for principal withdrawal.

0x02 validators can only be exited by pubkey