Restrict PR flow to APO

Hi friends ,

We are using R/3 PR for different purposes .

I want to CIF over Purchase Requisition of some specific type only (Let say ZSTR of Stock transfer) . But in CFM1 there is no such filter option .

Only two information available with me to differentiate between PR is Document type and Creation Indicator .

Can you please guide me how can I restrict non relevant PR to be CIF over to APO as i donot want to see unnecessary PR in APO ?

Regards

Nitesh