Cost (price) differences for moving average price material

Dear colleagues,

We have the material which quantity and costs should be valuated by the batch, basing on purchasing price from order.

When i post it (MIGO) deviation between moving average price from master data and actual costs is cumulated on a special account which is determined in OBYC (PRD transaction).

How can i avoid using PRD transaction? Cost differences shouldn't be taken in account at all.

Sorry for my English.