Manual data maintenance
Manual data maintenance handles two data-correction needs that ordinary configuration changes cannot address:
- Reprocess historical data — recalculate or replace results when source data arrives late, or when a corrected configuration must apply retroactively.
- Remove selected telemetry — permanently delete specific stored values that are confirmed invalid.
Removal does not repair a source or configuration problem. Fix the underlying cause separately.
Choose the right direction
Section titled “Choose the right direction”| If this is the situation | Use this direction |
|---|---|
| Source data arrived late, or a corrected configuration must apply historically | Reprocess |
| A known set of stored values is invalid and must be removed | Remove |
| The cause is still unknown | Investigate first |
| The scope cannot be named precisely | Narrow the scope first to the plant, devices, measurements, and period |
Define the scope before work begins
Section titled “Define the scope before work begins”Every request must state the following in writing:
- The affected plant, devices, and telemetry measurements.
- Exact local and UTC time boundaries.
- Evidence that the current values are wrong and the expected correct result.
- Downstream dashboards, reports, or calculations that may change.
- The person responsible for verifying the outcome.
For removal, the scope must identify exact values rather than only a date range. If the preview of affected values is incomplete, the scope must be narrowed until the preview is complete.
Understand the operation boundaries
Section titled “Understand the operation boundaries”Reprocess historical data
Section titled “Reprocess historical data”Reprocessing updates historical results for the approved scope. Accepted reprocessing work is queued, and not all partitions complete at once.
After completion, the requested scope must be verified against the expected result.
Remove selected telemetry
Section titled “Remove selected telemetry”Removal permanently deletes the selected stored values. It is immediate and irreversible; it does not archive values for later recovery.
After removal, verify that the selected values are absent and review affected views.
Access and safeguards
Section titled “Access and safeguards”Both operations are restricted to administrators. The executable procedure, safeguards, and limitations are in the internal runbook (sign-in required).