Field  | Description  | 
|---|---|
Class name  | Enter the exact name of your extension, or select the class name of a solution extension (SX) from the pop-up. The pop-up displays all the unregistered SXs that are loaded via an OSGI bundle. You cannot select SXs that are registered via classpath; these have to be entered manually.  | 
Is available  | Indicates whether the SX is available.  | 
System code  | Displays a generated code to identify the SX.  | 
Business object type  | Displays the BO type for which the SX works.  | 
Description  | If a description of the extension has been defined in the programmed code, this field will automatically display it.  | 
Update count  | Displays an incremented value indicating the number of times this field has been updated.  | 
Usages  | Displays all the business objects where the extension is linked in FieldDefiner. It is available only in the Extensions step.  | 
You must link the extension to a business object in Field Definer to execute it on an action of a specific business object. For task user extensions, you must add the user extension as a task user extension in the Scheduled tasks TSI.  | 
For more information, see Linking extensions to business objects (Field Definer).  |