Hi Santosh,
I am facing the same issue like you.. Could you please advise me how you have solved your issue.
"
I am logged in buy side & created successfully product classifictaion "office supply"
Now I have selected purchasing category & pressed button "publish standard product classification"
But not able to view the same category on registartion form .
Please suggest how to troubleshoot the replciation of product category to sell side"
Thanks,
Nanddha