Update Rule Problem

Question: Dear gurus,

Currently I'd like to update two/more entries in a SIS for one event. (e.g. when Sales Order is created, the incoming order will be update. I'd like to distribute a portion of the incoming order to another customer based on my own logic) Is it possible? I think i can't make use of creating another update rule as I don't know how many target customers I should distribute the amount to. I tried to look at the user exits but it seems not useful in this case. Any ideas

Thanks a lot.

Answer:
hmmm... base on what you mention, I can't see a way to get it done. Just for benefit of doubt, do you mind giving some examples for your scenario?