Solution to the abnormal return status of the credit card interface request:

1. Check whether the request parameters are correct, including request method, request address, request header, request body, etc. If the parameters are incorrect, correct them promptly and send the request again.

2. Check whether the network connection is stable. You can try to disconnect and reconnect, or change the network environment and resend the request.

3. Check whether the interface service is running normally. You can check the log of the interface service or contact the interface service provider to confirm whether there are any abnormalities in the service.

Credit cards, also called credit cards, are credit certificates issued by commercial banks or credit card companies to consumers with qualified credit.