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

# Logs

> Monitor datasource execution history with fetch, parse, and save logs

<img src="https://mintcdn.com/reelevant/10tXeCE_biVlzX8s/images/datahub/logs-page-v2.png?fit=max&auto=format&n=10tXeCE_biVlzX8s&q=85&s=f21eb0e59d021cc1ce632f04f957c734" alt="Logs page showing execution entries with status and details" width="1280" height="800" data-path="images/datahub/logs-page-v2.png" />

## Overview

The Logs page displays the execution history of a datasource's data refresh cycles. Each refresh operation (fetch, parse, save) is logged with its status, timing, and any errors or warnings.

## Log Entries

Each log entry shows:

| Field        | Description                                                |
| ------------ | ---------------------------------------------------------- |
| **Document** | The source document or batch being processed.              |
| **Line**     | The line number in the source data (for row-level issues). |
| **Level**    | Info, Warning, or Error.                                   |
| **Message**  | A description of the event or issue.                       |

## Filters

| Filter           | Description                                               |
| ---------------- | --------------------------------------------------------- |
| **Show only**    | Filter by log level — show only Warning events or higher. |
| **Last update**  | Filter by the last refresh version.                       |
| **Levels**       | Filter by specific log levels (Info, Warning, Error).     |
| **All versions** | Show logs from all refresh cycles, or only the latest.    |

## Log Message Types

| Message                          | Description                                                  |
| -------------------------------- | ------------------------------------------------------------ |
| **Start Refresh**                | The data refresh cycle has started.                          |
| **End Refresh**                  | The refresh cycle completed.                                 |
| **entries have been updated**    | Shows the total number of entries processed.                 |
| **Value is not a type**          | A field value doesn't match its expected type.               |
| **Impossible to locate address** | Geocoding failed for a location entry.                       |
| **Unable to locate the country** | Country geocoding failed.                                    |
| **Entries drop rate too high**   | A significant number of entries were lost between refreshes. |
| **Fields are missing**           | Required field values are empty for an entry.                |
| **New field detected**           | A new field was found in the source data.                    |
| **Failed to pull data**          | The data source could not be retrieved.                      |

<Tip>
  Regularly check your logs after datasource updates. Warning and Error entries help you identify data quality issues before they affect your [workflows](/product-guide/workflows/overview).
</Tip>