Christopher_Mal
ServiceNow Employee

Full credit to Kenny Caldwell for this list.   Kenny is a brilliant engineer and I always learn something when working with him, so I am passing some of the info onto the community. If you are wondering what you get for extending the Task table in ServiceNow these are some things to consider.

  1. Tables/Fields which are limited to the Task table.
    1. Approval Rules[sysrule_approvals] http://wiki.servicenow.com/index.php?title=Approval_Rules#gsc.tab=0
    2. Assignment Rules[sysrule_assignment] -http://wiki.servicenow.com/index.php?title=Defining_Assignment_Rules#gsc.tab=0
    3. Assignment Rules/Data Definition LookUp - http://wiki.servicenow.com/index.php?title=Defining_Assignment_Rules#gsc.tab=0
    4. Assessment conditions[assessment_conditions] - http://wiki.servicenow.com/index.php?title=Using_Change_Risk_Assessment#gsc.tab=0
    5. Service Level Agreements[sysrule_escalate] Inactivity Monitor/Legacy SLA - http://wiki.servicenow.com/index.php?title=Setting_Inactivity_Monitors#gsc.tab=0
    6. State Flows[sf_state_flow] - http://wiki.servicenow.com/index.php?title=State_Flows#gsc.tab=0
    7. Rate Cards[fm_rate_card] - http://wiki.servicenow.com/index.php?title=Cost_Management#gsc.tab=0
    8. Task Relationships[task_rel_task] - http://wiki.servicenow.com/index.php?title=Many_to_Many_Task_Relations#gsc.tab=0
    9. Execution plans[sc_cat_item_delivery_plan]   http://wiki.servicenow.com/index.php?title=Using_Execution_Plans#gsc.tab=0
    10. Visual Task Board[vtb_board] http://wiki.servicenow.com/index.php?title=Visual_Task_Boards#gsc.tab=0
    11. Survey Conditions[survey_conditions] - legacy http://wiki.servicenow.com/index.php?title=Survey_Management#gsc.tab=0
    12. SLA[contract_sla] - http://wiki.servicenow.com/index.php?title=Defining_an_SLA#gsc.tab=0
  2. Workflow Items
    1. Approvals
      1. Available in a workflow for Standalone task
        1. Approval — User
        2. Approval Action
        3. Rollback To
        4. Not Available in a workflow for Standalone task
          1. Approval — Group
          2. Approval Coordinator
          3. Generate
          4. Manual Approvals
    2. Tasks: Selection Not Available