How to know the Target Group GUID from SEGED_TG/ELTARGETGROUPITEM view?

Hi again gurus,

Recently, I've expanded the view SEGED_TG/ELTARGETGROUPITEM, including some code for the customer fields 1 to 30.

However, for some of them, I need to access to Target Group data; but I don´t know how to get this GUID for later access to CRMD_MKTTG_TG_H / CRMD_MKTTG_TG_I

Any ideas?

Thanks in advance!