The element <replacedBy> provides a part that can replace the defined part, ie, it indicates the interchangeable parts. A new part is defined as interchangeable to an old part following a design modification. The installation of an interchangeable part changes the product configuration. Several types of interchangeability are possible and the interchangeability relationship can depend on applicability statements, functional items and technical conditions.The interchangeable part can be identified by:− using the part number and manufacturer code (allowing then to refer to the part common information repository data module, if it is implemented) or− using the reference to the catalog sequence number where the part is described