A Defect defines a problem with a Product, Feature, Requirement, or other object, and, together with its Defect Actions, defines how that problem will be resolved.
About Defects Managing Defects Creating a Defect Creating a Defect from an Issue Viewing Defect Details Editing a Defect's Details Editing Multiple Defects Rejecting a Defect Opening a Defect Demoting a Defect from Open to Submit Demoting a Defect to Evaluate or Submit Reopening a Defect Viewing Environment Details Managing Issues Addressed Listing the Items a Defect is Reported Against Managing the Change Board for a Defect