In SAP Analytics Cloud, where can users access data locking tasks?

Where can you enter data into an SAP Analytics Cloud model? Note: There are 2 correct answers to this question.

Which activities can be scheduled from the calendar in SAP Analytics Cloud? Note: There are 2 correct answers to this question

Regarding comments, what can you do in analytical applications but not in stories? Note: There are 2 correct answers to this question

You saved data for a certain cost center and profit center combination. Later, an administrator created a validation rule that prevents saving data against that combination. What happens when you display the data in a story?