Background: A custom button was created with the method name 'abc' , which triggers a workflow through a Business Component user property. This workflow is designed to open a popup applet that displays a BI Publisher (BIP) report. However, when clicking the button, although the popup applet opens, it displays the following error message inside: Method ShowPopup is not allowed here (SBL-UIF-00348) Error Message: We detected an error which may have occurred for one or more of the following reasons: Method ShowPopup is not allowed here (SBL-UIF-00348) Debug and Resolution: After reviewing the Siebel Personalization Log, it was observed that following the execution of the custom method 'abc' , Siebel internally calls the 'ShowPopup' method. It turned out that 'ShowPopup' was also being used for another popup applet where it had been explicitly disabled via an Applet User Property ( CanInvoke = FALSE ). For testing purposes, we deactivated ...