PayPal\Api\PayoutItem::setSenderItemId PHP Method

A sender-specified ID number. Tracks the batch payout in an accounting system.

public setSenderItemId ( string $sender_item_id )
$sender_item_id	string

    public function setSenderItemId($sender_item_id)
    {
        $this->sender_item_id = $sender_item_id;
        return $this;
    }

PayoutItem