I want to make the Target Group mandatory at campaign header for certain campaign custom attribute. There is a BADI - Update Attributes of Campaign Header which should serve this purpose, but in the structure old_campaign, i couldnt find the field for target group id, which means i couldn't validate the target group is present or not? Can we use any other logic or table to identify the target group assigned to Campain or not?
What is the solution for this? Any help?