> ## Documentation Index
> Fetch the complete documentation index at: https://docs.engrate.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Energy Volume

An energy volume record contains metered energy data for a specific MaBiS-Zaehlpunkt, received via MSCONS messages. Each record covers one settlement month and contains interval-level values at the resolution specified by the MSCONS message.

## Key fields

| Field         | Description                                                                                                                                  |
| ------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| `mabis_zp_id` | The MaBiS-Zaehlpunkt identifier linking this data to an [Aggregation Object](/api-reference/settlement-management/models/aggregation-object) |
| `data_status` | MaBiS data status — `pruefdaten` (preliminary check data) or `abrechnungsdaten` (final billing data)                                         |
| `resolution`  | Interval resolution: `PT15M` (quarter-hourly), `PT30M` (half-hourly), or `PT60M` (hourly)                                                    |
| `unit`        | Energy unit: `KWH` or `MWH`                                                                                                                  |
| `category`    | MSCONS category classifying the type of energy measurement                                                                                   |

## Data status

| Status             | German           | Meaning                                            |
| ------------------ | ---------------- | -------------------------------------------------- |
| `pruefdaten`       | Prüfdaten        | Preliminary data for review, may be revised        |
| `abrechnungsdaten` | Abrechnungsdaten | Final billing data, used for definitive settlement |

## Versioning

Multiple energy volume records can exist for the same MaBiS-ZP and settlement month. Each MSCONS message creates a new record identified by `mscons_message_id` and `message_date`. The most recent record represents the current state.