Today I processed a customer message. This issue is when import BPs into a TG, the segmentation basis of this target group is not considered. This issue only happens when import relationship(BP and its contact person) from the file. I have never analysed this kind of issue before. After a long time debugging, I found out the BP import process happens in Function Module CRM_MKTTG_TG_JOB_PROCESSION. It is the master function module for the import. Here it checks if the partners exist in system already, if the relationship typs is valid, if the relationship does exist. Then it will assign the BPs to the target group. So next time if you have problems for BP import, please set a breakpoint at this function module for troubleshooing. I think it will definitely save your time. :wink: