When the reserved transfer balance of China Construction Bank is insufficient,

When the reserved transfer balance of CCB is insufficient, the transaction fails. According to relevant information, insufficient balance of the transfer-out card will lead to transfer failure, and CCB will promptly send a short message prompting transfer failure and prompt manual transfer. The appointment transfer of CCB is to transfer money at a certain time. At the appointed time, as long as the balance of the transfer account is sufficient, it will be automatically transferred according to the setting.