--- title: Planned Task Relationship form description: Learn about the fields of planned task relationship form. locale: en-US canonical_url: https://www.servicenow.com/docs/r/australia/it-business-management/project-management/planned-task-relationship-form.html release: australia product: Project Management classification: project-management topic_type: reference last_updated: "2026-03-12" reading_time_minutes: 1 breadcrumb: [Form field information for Project Management, Project Management reference, Project Management, Project Portfolio Management, Strategic Portfolio Management] --- # Planned Task Relationship form Learn about the fields of planned task relationship form. |Field|Description| |-----|-----------| |Predecessor|The predecessor, or determiner, in the relationship. You can select a new task. However, it is a good practice to delete the relationship and create a new relationship between the correct tasks.| |Successor|The successor in the relationship. The successor depends on the predecessor. You can select a new task. However, it is a good practice to delete the relationship and create a new relationship between the correct tasks.| |Type|The type of relationship, which is always **Predecessor of::Successor of**. Do not change this value.| |Sub Type|The type of dependency.| |Lag|The lag time between the tasks. The Enter the days, hours, minutes, and seconds for the lag. Lag time can be positive or negative.| **Related topics** [Modify a project task dependency](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-business-management/project-management/t_ModifyProjectTaskDependencies.md)