Enhancement working in R/3 but not in portal

I have a crm enhancement (version 4.0). I have created one badi implementation and anohter one was already exsisting which i have change. This is working in SAP (r/3) but in portal it is not behaving in the same way. I am not understandn what link is missing. I could see some BSP classes in the system, but i am not sure how to find out where to do the modifications.

Is there any way to debug from portal?

I am trying to give a pop-up message in this enhancement which will restrict from saving an activity based on certain conditions. That pop-up is not coming.