Mail dispatch has been technically implemented so that the long text of a single-step task is sent. This long text is entered in the definition of a single-step task.
This means that a send method must be available that operates on the work item itself, which represents the single-step task at runtime. The SELFITEM object type ( work item for dialog steps on self) provides methods that operate "on itself".
Position of the Object Type in the Business Object Repository:
Basis
→
Business Management
→
Workflow