What does the failure of Ctrip's automatic check-in mean?

The automatic check-in operation could not be completed. The reasons for the failure of automatic check-in are network problems, system failures, incomplete passenger information or non-compliance with airline regulations. You can try to check in automatically again, or choose to check in manually at the airport counter. Automatic check-in means that passengers use Ctrip App or website for online check-in, and the system will automatically allocate seats for passengers, avoiding the trouble of waiting in line.