Our Framework has gotten to a point where we need to handle AsyncPostBackErrors in different ways on the same page. Here is an example of my problem in short. We want to display ErrorTextA using an "alert();" if an error is thrown in systemA... which is simple enough. But on the same page we want ErrorTextB to be displayed on a label if an error is thrown in systemB. Is there a way to Differentiate between the two or have two AsyncPostBackError handlers on the same page? Basicly I need to know if the error came from SystemA or SystemB.