'Comm./imp. code no.' in the Sales Order pricing determination

Hello Experts,

I want to use Comm./imp. code no. in the Sales Order pricing determination.

I have maintained the Material Master for the plant but the same is not getting picked up in the Sales Order.

This is required to fetch the Customs Duties per Comm./imp. code no. for Sales within India for different types of customers e.g. EoU, SEZ, Normal Sales etc. (I have created 'z' conditions for getting duties). Please help.