If you study the generated HTML of a screen of a Genero application rendered using Universal Rendering, there are 4 attributes to be aware of in the generated HTML. These are id, data_aui_id, data_aui_name, and class. The mistake those doing GBC customisation make, particularly those with a web background, is looking at the “id” attribute to uniquely identify an element. This mistake also occurs with users of Web Application testing tools such as Selenium who by default may use the “id” attribute to uniquely identify a web element. The “data-aui-name” attribute is more likely the better attribute to use.
Read more at
https://4js.com/ask-reuben/ig-253/