How to return an error through web service

[bill.jenner]

In a situation where a raise event is normally used, how is this
handled inside a web service. How is the user notified of an error. Do
you simply have to have methods that return error values or is there a
better way.

 

[Guest]

I used two ways, an error page for serious errors and for say form entry
field errors, I use a label at the top that I make visible if one of the
fields is incorrectly filled out when the submit button is clicked.