What happens if I don't have enough money in my account balance
If you don't have enough money in your main account balance or sub-accounts, your transfers will automatically fail.
If you try to transfer using the Bloc API, you'll get a bad error response that the payment cannot be made.
Note:
Regardless of whether you are on the Test Mode or Live Mode, you will not be able to complete a transfer action if there are no enough funds in your Main Balance.
To learn how to top-up your main balance, read this article: How to fund your account.