To assess if an application is in the Interactive or Complete state, the following tags are verified:
1. Desktop applications - A wm_null message is sent to check the existence of the <wnd>, <ctrl>, <java>, or <uia> tags. If they exist, the activity is executed.
2. Web applications:
a. Internet Explorer - The <webctrl> tag is used to check if the Ready state of the HTML document is set to Complete. Additionally, the Busy state has to be set to "False".
b. Others - The <webctrl> tag is used to check if the Ready state of the HTML document is Complete.
3. SAP applications - First the presence of the <wnd> tag verified, after which a SAP specific API is used to detect if the session is busy or not.
UiPath Documentation
Exam Topic:
Describe the use of various Classic UI synchronization activities; for example, ElementExists, FindElement, and FindText