Unfortunately, if you have an existing bank account for withdrawal, it is unable to be edited/updated. However, if you would like to change your current bank account, you can delete the existing one by following the steps below:
1. From your Xendit dashboard, go to Withdrawal Settings and click "Bank Account"
2. Click icon "Delete" on the listed bank account
3. On the pop up page, click "Remove"
After it is removed, you can proceed to register the new bank account by clicking "+ Add Bank".
Visit this article for a complete guide on how to add bank account for withdrawal: How to Add Bank Account for Withdrawal in Dashboard?