# Fetching Mapper

The `fetch_mapper` method in the **Cataloglake** allows you to retrieve the details of an existing metadata mapper using its unique identifier (`metadata_mapper_id`). This method is useful for querying the configuration or structure of a previously created mapper.

**Payload Example**

```python
fetch_mapper_payload = {
    "metadata_mapper_id": "287b05a6-ff14-4b5f-a81d-f247b5bffcdd"
}
```

Usage example

```python
fetch_mapper = cataloglake.fetch_mapper(fetch_mapper_payload)
print(fetch_mapper)
```

Example Response

```json
{
  "metadata_mapper_id": "287b05a6-ff14-4b5f-a81d-f247b5bffcdd",
  "mapper_name": "",
  "metadata_keymap": [
    {
      "address of manufacturer": "manufacturer_address",
      "fssai number": "None",
      "marketing_fssai_num": "marketing_fssai_number",
      "fabric_colour": "fssai_number"
    }
  ]
}
```