BRF+ Routing Rule not showing Expression

Question

Hi Experts,
I am trying to create a BRF+ routing rule (line item by line item) within SAP Standard Process ID - SAP_GRAC_ACCESS_REQUEST
The purpose is to use it as a detour based upon Role attributes. Although the rule is generated in ABAP screen, when I try to modify BRF+ rule, the Expression where decision table is located, not coming up.
When I test it, it gives error - Expression not set.
What could be the issue? Need your help.
Thanks & Regards,
Sabita

Answer 1

Hi Sabita,
Definitely look up those courses! I'm an instructor for them in the UK and these sorts of questions are exactly those which most people ask on the courses!
GRFN_MW_S_ROUTING is a structure which contains those two fields. This should be the Result Data Object which will then automatically place those two fields as the results.
The Condition columns are user driven inputs where you give the criteria for the routing rules e.g. Business process or role criticality etc.
For routing rules or initiator rules, there are two sources for the information; the request header (attributes of the request) or the request line items (attributes of the roles on the request). There are some fields which may exist in both (e.g. Business process for the access request or the business process assigned to the Role) which explains why there are duplicates in the list. When selecting the conditions, scroll right to the bottom of the list and you'll find the Structures which show Header or Line Item. If you expand those, then you will see the list of fields again. By doing this, you'll know whether you're looking at the header or line item field.
Select the appropriate fields as the columns and then add in the rows to identify the specific criteria.