Item Data Relevant to Document Items 
You can enter document items. The document key data (document number, document type, document part, and document version) identifies the document.
See also:
The following data is relevant to document items.
- Document number
You use this number to identify the document.
- Document type
You use this key to assign a document to a group of similar documents. These documents have the same distinguishing features, and are processed in the same way.
- Document part
You can divide larger documents into document parts. For example, design departments use document parts to divide large design drawings into several pages.
- Version
The version represents a change status or a status for delivery of a document. Version management is used to save different processing statuses of a document.
- Item category
When you enter document items, use the item category Document item.
- Unit of measure
The system automatically sets the value piece (PC) for a document item.