Different kind of message in automatic credit control (OVA8) in S/4 HANA

[damoba]

I'm facing the following problem in credit management: 

The customer is demanding:

- An error message per step 010 that checks credit limit in the checking rule

- A warning message per step 020 that checks maximum document value

but the kind of message only can be set up in risk class and is unique for all checking...

Anyone knows if there is a way to cover this demmanding?

Thanks in advance and best regards,