IDOC Exceptions from ECC to email

Hi

I've been reading the SAP help on IDOC exception handling as I want all EDI IDOC errors in SAP ECC to be sent to a "user" as an email.  

Any step by step guides out there ?   i.e. from setting the WE20 partner profile so my userid will get message in my SAP workflow inbox ( I can't even get this working! - I've only manage to get partner not found message sent here)  to then having this directed out to an EMAIL or ideally an SMS.