Enter for which operation number this part will be used. If the part is incorporated in a fictitious part, you can enter zero (0) as the operation number. By entering a zero the part will inherit the operation number from the higher level main part (the fictitious part) when placing orders. It will also be moved up a level in the structure and the fictitious part will be deleted from the structure.
It may be necessary to enter a zero as the operation number for incorporated parts of a fictitious part, when the fictitious part appears in several different places in other preparations (it may have different operation numbers in that case).