5213 Sub-line item price change operation code [C] Desc: Code specifying the price change operation for a sub- line item. Repr: an..3 A Added to the baseline item unit price Price is to be added to the base line unit price. I Included in the baseline item unit price Price is included in the base line unit price. S Subtracted from the baseline item unit price Price is to be subtracted from the base line unit price.