Dear TW,
Agree, but when I need the changes only in one particular condition record (regardless of how many materials I am using in SO and their relevance to pricing reference material) then changes as suggested by llango at access sequence level is feasible rather than removing reference material from master data as this relevance might be useful in some other condition record.
One more thing is that, assume I have maintained pricing ref material in condition record, then all the materials with this reference material will be automatically triggered with condition record data in SO even though for some line item I do not want the value.
Vishwanath