Information processing system, information processing terminal, and information processing method

An information processing terminal in which a displayed screen transitions to another screen according to an operation by a user, the information processing terminal comprising:

• a screen configurator configured to generate screen data of the screen and cause a display to display the screen, the screen being configured to accept, from the user, a selection operation of selecting a parameter, a deletion operation of deleting the parameter, a validation operation of validating the parameter selected by the selection operation, and a cancellation operation of cancelling the selection operation;
• and
• an information manager configured to manage parameter information of the parameter for which the validation operation was last accepted, by holding the parameter information in a holder, wherein
• the screen configurator generates the screen data so as to reject the deletion operation of the user to delete the parameter for which the validation operation was last accepted, based on the parameter information held by the holder.

An information processing method executed in an information processing system in which a screen displayed by an information processing terminal transitions to another screen according to an operation by a user, the information processing method comprising:

• generating screen data of the screen and causing the information processing terminal to display the screen, the screen being configured to accept, from the user, a selection operation of selecting a parameter, a deletion operation of deleting the parameter, a validation operation of validating the parameter selected by the selection operation, and a cancellation operation of cancelling the selection operation;
• and
• managing parameter information of the parameter for which the validation operation was last accepted, by holding the parameter information in a holder, wherein
• the generating includes generating the screen data so as to reject the deletion operation of the user to delete the parameter for which the validation operation was last accepted, based on the parameter information held by the holder.