I'm using APEX 18.2. I have an existing page with a list displayed as tabs on top of the page and clicking each tab sets the page item value, which in turn used to display appropriate region on the page. Now, this page has to be accessed from a URL sent in the email. I've included the following url in the email, so that user can click on the link to go to page 8 and "summary" tab region in the page should be displayed. If the "P98_TAB_OPTION" in the url is "details", then details region on the page should displayed. But, clicking the link from email throws an error. any are ideas are appreciated, thanks for your help.