Purpose of this article
This article explains how Scaler's data quality system works — what Scaler Data Completion measures, how the three alert types interact with it, and what each alert type means for your data.
Related articles
What Scaler Data Completion measures
Scaler Data Completion reflects whether all required and conditionally required fields for an asset are correctly populated and valid.
When an asset reaches 100% Scaler Data Completion:
- Core calculations run
- Analytics become available
- (Complete) Reports can be generated (subject to report-specific requirements)
Data completion is evaluated structurally — not based on whether consumption values have been entered.
Three things to understand before you start
1. You can reach 100% without any meters or consumption
You do not need to create meters or add consumption data to reach 100%. As long as all required asset-level fields are complete and valid, data completion can reach 100%.
2. Meters only affect completion if they exist and are incorrect
Once meters are created, Scaler evaluates them. If a meter triggers an Error or Missing data alert, that alert reduces completion. If no meters exist, meter rules do not apply.
3. Incorrect consumption can reduce completion — but consumption is never required
If consumption is added and it contains errors (overlapping dates, missing units, invalid ranges), those errors will reduce completion. You are never required to add consumption to reach 100%.
How data completion is evaluated
Scaler checks data completion at three structural levels.
Asset level
Checks whether all required and conditionally required asset fields are valid, including Asset name, Client ID, Asset unit system, Main property type, Main property subtype, Country, Owned since, Active in analytics, Active in reporting outputs, and 3 Gross floor area fields.
Meter level (only applies once meters exist)
Checks each meter for correct configuration: Subcategory, Source, Covered area, Monitoring method, valid meter version dates, and no overlapping consumption periods.
Portfolio level
Portfolio completion is the average completion score across all active assets. A single incomplete asset reduces the overall percentage.
Alert types
Scaler generates three types of alerts when data doesn't meet required standards.
Alert type | Definition | Blocks completion? |
Error | Invalid or illogical data that violates validation rules | Yes |
Missing data | Required field (or conditionally required field) is empty | Yes |
Warning | Unusual value that may need review but does not indicate invalid data | No |
Errors
Errors occur when entered data violates validation rules, input requirements, or reporting logic.
Common general errors:
Covered areaof a meter exceeds the available floor area for itsArea type
- Overlapping (by more than a day) consumption date ranges within a meter
Common report-specific errors (e.g. GRESB):
- Whole-building meters have inconsistent operational control (landlord vs tenant) across resource categories

Missing data
Missing data alerts occur when a required or conditionally required field is empty.
For Scaler analytics, this typically includes missing Gross floor area, Common area, or Tenant area — these prevent calculation of coverage and intensities.
For reporting outputs, it includes fields required by specific frameworks (e.g. Percentage green missing under Meter Details for GRESB).
Important distinction: Missing data alerts do not refer to gaps in meter consumption history. Consumption gaps are handled through data coverage, not missing data alerts.
Warnings
Warnings flag situations that may need attention but do not block calculations and do not reduce Scaler Data Completion. A warning does not mean data is wrong — it means Scaler has detected something you may not have noticed and should verify.
There are two types of warnings.
Rule-based warnings
These flag logical inconsistencies or misalignments between related fields, meters, or records. Scaler handles the situation where possible but surfaces the warning so you can review it.
Examples:
- A meter's
Start dateis earlier than the asset'sOwned sincedate — Scaler automatically adjusts calculations to include only consumption from the ownership start date onward, but flags this so you're aware
- Only tenant meters exist with no common area meters — Scaler recommends changing to whole-building meters or adding common area meters
- A certification may no longer be valid based on its expiry date
- The sum of linked building unit areas exceeds the asset's
GFA - Tenant area
- A consumption entry of zero is present — if consumption is unknown, no entry should be added rather than entering zero
Consumption outlier warnings
These flag unusual year-over-year changes in consumption that exceed expected thresholds.
(current yearly consumption – previous yearly consumption)
÷ previous yearly consumptionA warning is triggered if the result falls outside [-0.5, +0.5] for energy, or [-0.5, +1.0] for water and waste — aligned with GRESB methodology. If the change is expected (building closure, occupancy change, operational disruption), no action is required, but you may want to document the context.

Where alerts appear
Alerts are visible throughout the Data Collection Portal:
- Asset List — configure the table to show alerts by report, sort by alert columns, and click Resolve for assets below 100% completion
- Asset edit view — alerts indicated visually at field level
- Portfolio Alerts dashboard — centralized view of all alerts across the portfolio, with bulk resolution via spreadsheet download
Additional resources
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