SAP GRC-GRAC_UIBB_SPM_REPORTS-Consolidated Log ALV report modification

Hi Experts,

I am working on WebDynpro Component GRAC_UIBB_SPM_REPORTS which is the backend for Consolidated Log report in SAP GRC

If you observe the ALV Report for consolidated log the field FireFighter highlighted in RED block below is a combination of  Firstname and LastName of SAP user ID. However, the requirement is to display only user ID instead of names. I would like to know the method name in which the data is being populated for ALV so that I can implement a post-exit for the requirement. I initially thought that it is INIT_ALV but it would be only used for changing the attributes of ALV display. Please advice.

Best Regards,

Lakshman.