Enterprise Security Master Specialization Group

Could you provide the screen-shot of console location where you looking into?

Can you provide a bit more info on what's happening please? Are you (for example) trying to delete SEPM1 in Site_A, while logged onto SEPM1 in Site_B? If so, then have you tried logging into a Site_A SEPM (perhaps a SEPM2 if you have one) to try to ...