To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) Steppages define the default pagecontext during the step execution - This option is correct. Step pages in Pega define the default page context during the execution of a step. The step page is used to store and access data within the activity.
Option B) Step pages are removed when the activity ended - This option is incorrect. Step pages are not automatically removed when the activity ends. They may persist after the activity execution, depending on the configuration or design of the application.
Option C) Steppage class is always equal to AppliesTo Key - This option is incorrect. The step page class does not have to be equal to the Applies To key. The step page class can be different from the Applies To key and can be dynamically set during the activity execution.
Option D) StepPage is not required on each step of an activity - This option is correct. StepPage is not required on every step of an activity. It is only required when you need to store or access data within that step. If a step does not require a step page, you can leave it blank.
Therefore, the correct answers are A) Steppages define the default pagecontext during the step execution and D) StepPage is not required on each step of an activity.