Definition
A document structure is a complete and formally structured list of linked documents including their document number, document type, document part, version, and quantity.
Usage
Document structures help you organize complex information (documents) by creating information units. For example, you can use a document structure to manage the entire documentation on a very complex product, which consists of a text file, several technical drawings, photographs, various service manuals, and films containing operating instructions.
Structure
A document structure is created for a document info record.
The following graphic shows a document structure.

Each document in a document structure can have a document structure (assembly) of its own.

The term assembly comes originally from the context of material BOMs. In the context of document structures, this term is used to describe a set of linked documents and text items.
Integration
On the Basic data screen, you can recognize a document that has a document structure by the Document structure exists indicator.
You can define revision levels for a document structure to reflect the different change statuses of a product. Similar documents that contain only certain different items can be grouped together to form variant document structures and assigned to a joint BOM group.
You can use a document structure as an assembly more than once in different BOM categories (for example, material BOMs, equipment BOMs). See:
Multiple Use of Documents). You can create a where-used list to determine the BOMs and document structures in which the assembly is used.The mass change function allows you to replace an old document with a new one in several document structures or BOMs at once.