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The main screen of the Interface Documentation application is divided into four sections:


  • Interface header data
  • Application help (hidden per default)
  • Interface attributes section
  • Custom attribute maintenance (hidden per default). See chapter Custom Content for Integration Repository for further details.

 Interface Header Section

The header information of the interface is taken from the corresponding Interface object in Solution Documentation. Besides Branch, System Role and the Person Responsible (if maintained for the Interface object) the header data consists of the sender and receiver data. This is the name of the involved Logical Component Groups (LCGs) and the actual technical system data for the current context (the branch, site, and system role the Interface Documentation was created for). Note that the optional middleware LCG is only displayed if you maintained it in Solution Documentation.

Interface Attributes Section


The attribute maintenance section consists of four major areas, which are arranged in tabs:

  • Technical Attributes: to classify the type of the interface in more detail
  • Routing Attributes: to document the communication profile (like communication partners, destinations etc.)
  • Functional Attributes: to maintain basic business-related data (like interface volume, peak times)
  • Further Details: to provide additional interface information in free text format


Each interface technology has its own set of attributes which is visible in the Technical Attributes and the Routing Attributes area. Functional Attributes don’t depend on the interface technology. Every attribute is optional to maintain, except for the interface subtypes (see below). Refer to appendix for a short description of all SAP standard attributes.


The interface technology as maintained in Solution Documentation is displayed at the top of the Interface Attributes section. Optionally the processing type of the interface – the so-called Quality of Service – can be selected per dropdown menu. Possible values are:

  • Best Effort (synchronous processing)
  • Exactly Once (asynchronous processing)
  • Exactly Once in Order (asynchronous processing)


Refer to SAP Online help for further details on the Quality of Service (for example via path Technology Platform ->SAP NetWeaver ->SAP NetWeaver 7.3 ->Application Help (Function-oriented View) ->Process Integration ->Advanced Adapter Engine ->Quality of Service).




In case an interface technology provides subtypes (see Table 1 in Create Interface in Integration Repository) the interface attribute data only show up if you select a subtype from the dropdown menu. Note that you can change the subtype afterwards, but then all already maintained attributes values are discarded!

For interface technology PI you must choose if the managed system is a dual-stack or JAVA-only installation. Then you can define which adapter types are involved in the processing on sender and receiver side. Based on this selection the interface attributes show up accordingly. Again, you can change the selection afterwards, for example you can change the adapter type if the PI interface was changed. Then all adapter-specific attribute data is lost too; common attributes which are not adapter-specific are kept, however. See chapter 
Document Interfaces with Middleware Component for further details.


Input help for attributes

Most attributes provide dynamic value helps or static domain values. While the static values can be obtained by dropdown menu, dynamic value helps typically retrieve the available values from the managed system per remote function call. When you call such a value help you first have to decide from which system the values should be retrieved from (can be sender or receiver system of the interface, or the middleware component if maintained). Based on this selection and further, optional filter values the managed system is called, and the corresponding values are shown in a table.

Multiple attributes

Some attributes allow you to maintain multiple values. Use the Plus (+) / Minus (-) buttons to add or remove attribute values.

System-dependency of attributes

Many attributes that you can maintain in Interface Documentation are system-independent per interface. For example, if you document an IDoc interface, the IDoc message type remains the same in all system roles (the message type doesn’t change between development and production system). Other attributes, however, depend on system-specific settings. For example, an RFC destination is different for each particular system and thus must be maintained as system-specific.


System-independent attributes are marked with the Chain icon ( ). The attribute value you provide for such an attribute in one solution context (in a dedicated branch, site, and system role) remains the same in all other contexts of the same branch. If you change a system-independent attribute in one context, it will automatically be updated in all other contexts within the same branch, too.



System-dependent attributes are not marked with the chain icon. Such attributes must be maintained in each context within the same branch independently.


Peak Times Maintenance

In Functional Attributes tab you can provide peak times of the interface. The corresponding attributes are maintained in a separate window which you open by clicking the link Maintain Peak Times.


There are three attributes available: Peak Month, Peak Day, and Peak Hour. All of them offer an input help with fixed values. The peak times are maintained in a table-like approach. Each line can combine the three attributes and are read as a single peak time. Additional rows represent further peak times. Examples:        

  • Peak Time 1: Peak Hour 08 - 09 am, Peak Day Monday => means: each Monday between 08 - 09 am
  • Peak Time 2: Peak Hour 03 - 04 am => means: each day between 03 - 04 am
  • Peak Time 3: Peak Month December => means: whole December

You can add or remove rows with the Add / Remove buttons. When finished simply press the Done button to return to the main screen. Be aware that the values are saved only when you press Save or Save and Close in the main screen.

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