Yes, you can. One FB BM ID can make several different WABA accounts in different BSP's. For example you make WABA in company X and WABA in Qiscus. But to create a new WABA accounts you have to submit different phone number with phone number in previous WABA accounts, because one server only have one number and vice versa.
Can I have more than one WABA accounts under same FB BM ID with different BSP?