WOW!!! PARIS, you solved my problem, it worked, Appreciated.
My another finding is I cannot assign System Type to Pipe Accessories, which is right, they will absorb the system type from connected elements, some of my chambers were in Pipe accessories, I changed them to Plumbing Fixtures and it worked.
Hi @samirdesh100
you are welcome, if your problem has been solved, can you mark the post as solved?
Solved posts can help other users, who face the same problem.
Cheers