No price change doc while KKPAN

I have some material codes which are marked as "S" at valuation type level; cost estimate with qty struc check is not there.

Hence, I am trying to valuate these materials using KKPAN. I select category M and give price and maintain some variable price under category V also.

But while releasing through CK24, no price change document is getting generated. What could be the possible reason and solution....