| WID | Workday Internal ID — a 32-hex string, stable per object across renames. |
| Reference ID | Tenant-defined human-readable ID used for assessment statuses, assessment tests (campaign IDs), and document categories. |
| ISU | Integration System User — the dedicated Workday user the integration authenticates as. |
| Supervisory Organisation | Workday's term for the org node a worker or job requisition belongs to. Deeper Signals uses it to identify the hiring manager via Manager_Reference. |
| Custom Object | A tenant-defined business object with its own fields. Deeper Signals writes per-dimension scores into one custom object on Job Application and one on Worker. |
| Profile Group | A Workday concept controlling which fields and custom objects appear on a worker's profile UI. |
| Closure table (Deeper Signals) | A flattening of the manager hierarchy used internally by Deeper Signals to answer "who can see whom" in a single query. |
| UACF | User Access Control Filter — Deeper Signals' per-admin restriction on which users they can see (group, HRIS field, or campaign). |