The comprehensive score of CCB's credit card application for installment repayment is insufficient, which means that you can't apply for bill installment at present, maybe you haven't met the conditions for applying for CCB's credit card installment. The minimum installment amount of the application bill is 500 yuan RMB, and the maximum installment amount shall not exceed 90% of the total RMB consumption in the issued bill (excluding cash withdrawal, installment payment and other transactions stipulated by the bank). It may also be that your usual credit card does not meet the standards of CCB. Usually, you should use more credit cards. High-amount and various types of consumption can increase the bank's goodwill towards you and improve your comprehensive score.