Condition Exclusion

I have 3 sales document types belonging to different sales areas. The pricing is similar, one manual condition and service tax built up on the manual condition. I have 3 manual condition types in my respective pricing procedures, In order to combine the pricing procedure and make it common, I want to use the exclusion technique. I tried attaching the conditions to the exclusion groups and used the D option, but how do i tell the system to get the relevant manual condition belonging to the respective sales document type/sales area while making the order. is there a solution?