Query for the key on the console, and the system prompts that the key does not exist or is expired. But when adding the key on the console, the system propmts that the key already exists.
Different clients use different protocols. Therefore, values written by different client applications may be invisible on the console.
This is normal. We recommend you to read the values by client applications such as java, net, and php and set them accordingly so that they can be properly displayed on the console.