---
title: "Set a catalog's field mappings (data types)"
method: PUT
path: "/api/catalogs/{catalogName}/fieldMappings"
tags: ["catalogs"]
---

# Set a catalog's field mappings (data types)

`PUT /api/catalogs/{catalogName}/fieldMappings`

Set a catalog's field mappings (data types). After being set, a given field's data type may not be changed. Valid types: boolean, date, geo_location, long, double, object, and string.

## Path parameters

- `catalogName` string, required

## Request body

- CatalogMappingsUpdateRequest
  - `mappingsUpdates` CatalogFieldDefinitionSerializedModel[], required — mappingsUpdates
    - `children` CatalogFieldDefinitionSerializedModel[]
    - `fieldName` string, required
    - `fieldType` string, required

## Response `200`

Catalog field mappings updated

## Other responses

- `400` — Invalid parameters
- `401` — Invalid API key

---

[API](https://skmtc.net/iterable/apis/iterable-api.md) · [All operations](https://skmtc.net/iterable/apis/iterable-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/iterable/iterable-api/revisions/afaab604b58c/schema)