I am planning for PMP and at the same time, I am also interested in Lean six sigma and 6 sigma GB or BB. But, before proceeding further, I want to know
1. Is it mandatory to get ASQ certification on GB and BB? Or can do through any other associations/ institutes?
2. If I do GB and BB through other associates/ institutes, will it be accepted by companies?
3. Is it required to do GB before BB or directly can do BB?