Articles: Article Categories in ALE
As in online mode, you can maintain all article categories when transferring and distributing data by Application Link Enabling (ALE); that is, you can create merchandise category articles and hierarchy articles only when maintaining merchandise categories.
You transfer generic articles and variants in a single IDoc.
In the case of structured articles, the header article and the components are transferred in different IDocs. The bill of material (BOM) is also transferred in a separate IDoc.
SeeArticles: IDoc Types for Distributing Master Data.