Logical System already use in BPM

Hi

We have created two BPMs and one of them the Logical system is configured to 0071ME36. For the second BPM we tried to use the same logical system but we get an error in the XI "Logical System 0071ME36 is already use in the BPM_6547_.

That`s means we must use diferent logical system name for each BPM we created?

Thanks in advanced.