The Pega date picker component is comprised of two interactive elements: The element that allows direct data input and the element that allows a user to pick a date from a calendar.  A user can choose whichever option they prefer to select or edit their date. 

For this component to be accessible for a screen reader user and a voice recognition user, we need to ensure that a user can directly focus on either element and understand the context. Therefore, if there is already a selected date, then whether you engage directly with the input or the calendar, both will convey the date selected.

This scenario is an expected behavior. The calendar icon announcement by the screen reader is expected.

Pega's configuration is fully aligned with WCAG standards. A reference example can be found at Date Picker Dialog Example | APG | WAI | W3C, where the date input box announces the date and the calendar button reconfirms the selected date.