JD。 COM Flash Payment is a payment product launched by JD Finance for JD.COM users, which supports offline POS consumption and online China UnionPay Express. There is a limit for flash payment in JD.COM, but what is the problem of insufficient balance when spending? Why does JD.COM's flash payment amount show insufficient balance? JD.COM Flash Payment supports the use of bound bank cards or white lines to complete the payment. If the balance of the payment prompt is insufficient, it is because the available amount of the bound bank card or white note is insufficient. It is suggested to replace the bank card or use other payment methods. The payment method can be adjusted by clicking the gear icon in the upper left corner of Jingdong Financial APP and selecting the default payment tool for payment settings. Please note that only some users in JD.COM support IOU flash payment. If there is no blank option in the deduction method, even if the blank has a limit, you can't use the blank flash payment. In addition, there is a payment limit for IOUs flash payment, which is generally 20,000 yuan/day and 50,000 yuan/month, and the credit card limit is 3,000 yuan/day and the highest is 3,000 yuan/month. Flash payment consumption is obtained by comprehensive evaluation of the system, and manual adjustment is not supported.