Standard SAP format for electronic data interchange between systems (Intermediate Document).
Different message types (for example, delivery confirmations or purchase orders) normally represent the different specific formats, known as IDoc types. Multiple message types with related content can be assigned to one IDoc type
The IDoc type ORDERS01 transfers the logical message types ORDERS (purchase order) and ORDRSP (order confirmation).
Among other areas, IDocs are used in both Electronic Data Interchange (EDI) and for data distribution in a system group (ALE).