| DisplayName | Description | ID | Base Class | Abstract | Hosted | Singleton | Group | Extension | Accessibility | ElementId |
| Work Item | Defines the basic properties of work items | System.WorkItem | System.Entity | True | False | False | False | False | Public | f59821e2-0364-ed2c-19e3-752efbb1ece9 |
| Work Item Action Log | Work item action logs, such as logging about automatic actions | System.WorkItem.ActionLog | System.WorkItem.Log | True | False | False | False | False | Public | c17ed57f-cc9a-0c00-9a15-89c636407bf3 |
| Billable Time | Billable time | System.WorkItem.BillableTime | System.WorkItem.Log | False | False | False | False | False | Public | 6645cdbe-78a3-ab81-7de9-638b733214fe |
| Work Item Comments Log | All comments associated with work items in the action log | System.WorkItem.CommentLog | System.WorkItem.Log | True | False | False | False | False | Public | 898d3903-c4f2-4c4b-3492-8c5af2bf7091 |
| Work Item Log | All log entries associated with work items, such as the action log and notification log | System.WorkItem.Log | System.Information | True | False | False | False | False | Public | 263a89d8-74d4-e8d7-3f34-b4dc77c415cd |
| Work Item Notification Log | Notification logs for work items | System.WorkItem.NotificationLog | System.WorkItem.Log | True | False | False | False | False | Public | e8a69d8b-514f-6c44-bddb-3a7fb88d8e3b |
| Trouble Ticket | Trouble ticket | System.WorkItem.TroubleTicket | System.WorkItem | True | False | False | False | False | Public | f20a2c01-a0fe-c48c-db71-aade427d19ec |
| Trouble Ticket Action Log | Trouble ticket action logs | System.WorkItem.TroubleTicket.ActionLog | System.WorkItem.ActionLog | False | False | False | False | False | Public | dbb6a632-0a7e-cef8-1fc9-405d5cd4d911 |
| Trouble Ticket Analyst Comments | Analyst comments on trouble tickets | System.WorkItem.TroubleTicket.AnalystCommentLog | System.WorkItem.CommentLog | False | False | False | False | False | Public | f14b70f4-878c-c0e1-b5c1-06ca22d05d40 |
| Trouble Ticket Audit Log | Trouble Ticket audit logs | System.WorkItem.TroubleTicket.AuditCommentLog | System.WorkItem.CommentLog | False | False | False | False | False | Public | c06a4eb0-d21e-1838-0995-ee817b3aac4a |
| Trouble Ticket Notification Log | All notification logs for trouble tickets, such as e-mail and text message notifications | System.WorkItem.TroubleTicket.NotificationLog | System.WorkItem.NotificationLog | True | False | False | False | False | Public | e278714c-b6bf-1c33-0c53-114979d4fc7e |
| Text Message Notification Log for Trouble Tickets | Notification logs for text message (SIP) notifications about trouble tickets | System.WorkItem.TroubleTicket.SipNotificationLog | System.WorkItem.TroubleTicket.NotificationLog | False | False | False | False | False | Public | cb08816f-c354-348c-f6d4-74f9de9b5680 |
| E-Mail Notification Log for Trouble Tickets | Notification logs for e-mail (SMTP) notifications about trouble tickets | System.WorkItem.TroubleTicket.SmtpNotificationLog | System.WorkItem.TroubleTicket.NotificationLog | False | False | False | False | False | Public | b4e0d3c5-b138-5f1a-a5cd-2249c3829646 |
| Trouble Ticket User Comments | User comments on trouble tickets | System.WorkItem.TroubleTicket.UserCommentLog | System.WorkItem.CommentLog | False | False | False | False | False | Public | a3d4e16f-5e8a-18ba-9198-d9815194c986 |
| Work Item Group | Group of all work items | System.WorkItemGroup | System.Collections | True | False | False | False | False | Public | 31d729d9-83c5-5b36-703b-c51d54395687 |