Overrides the primary key detected on a schema.

This is a full replacement: the keys you supply become the complete override set, replacing any previously configured overrides. Omitting a key that was previously set removes it.

Primary key overrides are useful when the source does not expose a primary key or when the source-detected key is not the correct deduplication identifier for your use case.

📘 To revert to the source-detected primary keys and remove all overrides, use DELETE /api/connections/{connection_id}/schemas/{schema_id}/primary_keys.

{
  "fields": [
    {
      "field_id": "id",
      "is_primary_key": true
    }
  ]
}