The WellGroupMember tenantId field is stamped at record creation and mirrors the tenantId of the parent WellGroup and MonitoringWell. All queries for group membership filter by tenantId, ensuring one organization can never read or modify another's well groupings. This field is set automatically on creation and is not editable — it is the foundation of piper's multi-tenant data isolation for well group relationships.
Technical section
Data model, API, and internals — visible to developers.