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

# Panel preparation

> Validate a long table of series (duplicates, missing periods, missing values), insert missing periods on each series' calendar and fill them, and generate synthetic panels to try the forecasting tools.

Toolset `forecast_data`: 2 tools.

| Tool | What it does | Notes |
| - | - | - |
| `forecast_prepare_panel` | Checks a long table of series and makes it regular: reports duplicates, periods missing from each series' calendar and missing values, inserts the missing periods between the start and end bounds at the frequency, and fills them. | |
| `forecast_synthetic_panel` | Generates a reproducible synthetic panel (unique\_id, ds, y) with seasonality and optional trend, static and exogenous features, simulated model forecasts with intervals (to try forecast\_evaluate) or a daily price column. | |

Inputs, limits and outputs are described in [Fincept Forecast](/guides/fincept-forecast). Full schemas: `fincept_describe_tool`.


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