Link Types

Link types define the kinds of relationships that can be created between items and documents (e.g., “Verified by”, “Derives from”, “Mitigates”). Each link type has forward and reverse labels, optional rules restricting which types can be connected, and optional custom fields on the link itself.

Navigate to Settings → Types & Schema → Link Types. The list shows each link type with its labels and its rules as Source → Target pills.

The Link Types page with type rules and the editor open

Note: Changes are buffered — new link types show a New badge, edited ones Edited, and deletions Marked for deletion with an Undo. Nothing is persisted until you click Save in the bottom bar.

  1. Click Add Link Type
  2. Enter a Key — a unique identifier
  3. Set the Label — the forward direction (e.g., “Verified by”)
  4. Set the Reverse Label — the reverse direction (e.g., “Verifies”)
  5. Add type rules and link fields as needed, then click Add

How link type definitions resolve across the global/group/workarea tiers is covered in Type & Field Inheritance.

Type Rules

Type rules control which types can be connected by this link type. Each link type can have multiple rules; a link is allowed if it matches any rule.

  1. Click Add Rule within the link type editor
  2. Pick the allowed Source types — checkboxes per type, with an Any type option
  3. Pick the allowed Target types the same way

Document types appear in the lists with a “(Doc)” suffix, so links can also target documents.

Link types can define their own fields capturing data on each link instance — useful for metadata like applicability, rationale, or confidence.

TypeDescription
StringSingle-line text
EnumDropdown from an enumeration, with an optional Multi setting for multiple values
NumberNumeric value
BooleanTrue/false toggle
Date / Date & TimeDate(-time) values

Examples

LabelReverse LabelUse Case
Verified byVerifiesRequirement → Test Case traceability
Derives fromDerived byRequirement decomposition
Mitigated byMitigatesHazard mitigation tracking