Structural role assignment in SRM

Hi all,

This is my first post, I hope I will find an answer to my question.

We are about to implement SRM and our security strategy is to use the structure to assign the roles to the position and to the org unit. We did this in our ECC system and it works as expected, however in SRM the relationship between the employees and the user ID via Infotype 0105 doesn't exist. In the SRM structure the relation is with the BP, does anyone know if there is a program like PFCG_TIME_DEPENDENCY in SRM to update the users roles base on their position assignment.

I tried many things like USER_GEN, BBP_BP_OM_INTEGRATE but it doesn't seem to do what I'm looking for. Also, does anyone know what is the purpose of attribut role. I tried to assign role to this attribut but it seems useless.

Thanks,