const options = {
  method: 'PATCH',
  headers: {
    'x-spree-api-key': '<api-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: 'Hoodie',
    delivery_profile_id: 'fp_86Rf07xd4z',
    option_type_ids: ['<string>'],
    category_ids: ['<string>'],
    custom_field_definitions: [{id: 'cfdef_abc123', required: true, sort_order: 123}]
  })
};

fetch('http://{defaultHost}/api/v3/admin/product_types/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

curl --request PATCH \
  --url http://{defaultHost}/api/v3/admin/product_types/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-spree-api-key: <api-key>' \
  --data '
{
  "name": "Hoodie",
  "delivery_profile_id": "fp_86Rf07xd4z",
  "option_type_ids": [
    "<string>"
  ],
  "category_ids": [
    "<string>"
  ],
  "custom_field_definitions": [
    {
      "id": "cfdef_abc123",
      "required": true,
      "sort_order": 123
    }
  ]
}
'

{
  "id": "pt_UkLWZg9DAJ",
  "name": "Premium T-Shirt",
  "products_count": 0,
  "created_at": "2026-01-15T12:00:00.000Z",
  "updated_at": "2026-01-15T12:00:00.000Z",
  "delivery_profile_id": null,
  "option_type_ids": [],
  "category_ids": [],
  "custom_field_definitions": []
}