> For the complete documentation index, see [llms.txt](https://docs.groclake.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.groclake.ai/lakes/index-stores/cataloglake/creating-mapper.md).

# Creating Mapper

The `create_mapper` method is used to create a new metadata mapper in CatalogLake. This mapper is responsible for defining and managing metadata keys and their relationships.

**Payload Example**

```python
create_mapper_payload = {
    "mapper_name": "mapper_name",
    "customer_id": "121287096096",
    "language": "en-us",
    "metadata_keys": [
        "address of manufacturer",
        "fssai number",
        "marketing_fssai_num",
        "fabric_colour"
    ]
}
```

Usage example

```python
create_mapper_result = cataloglake.create_mapper(create_mapper_payload)
print(create_mapper_result)
```

Example Response

```json
{
  "request_id": "46e7a4d1-d733-4f03-acf6-1d3391164265",
  "customer_id": "121287096096",
  "metadata_mapper_id": "287b05a6-ff14-4b5f-a81d-f247b5bffcdd",
  "metadata_keymap": [
    {
      "address of manufacturer": "manufacturer_address",
      "fssai number": "fssai_number",
      "marketing_fssai_num": "marketing_fssai_number",
      "fabric_colour": "colour"
    }
  ]
}
```


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