In this case within the Cordys BOP4 product.
To handle technical errors (like a webservice can not be reached due to system crash) and functional errors the "normal" BPM flow gets blurred with all these exceptions.
We discussed ways to handle this:
1) Using different Views on your BPM (this is not (yet?) a feature in Cordys), so viewing your BPM with/without error handling)
2) Using different colors in your BPM
3) Using Embedded Subprocess
|Example of option 2|
|Example of option 3|