Create Container Custom Field

Creates or updates a custom field on a container. If a custom field with the specified api_slug already exists, it will be updated.

Path parameters

Parameter	Required	Description
`container_id`	Yes	The ID of the container

Request body

Parameter	Required	Description
`data.type`	Yes	Must be `custom_field`
`data.attributes.api_slug`	Yes	The slug of the custom field definition
`data.attributes.value`	Yes	The value to set (type depends on the definition’s data type)

The container is implied by the path, so do not send data.relationships.entity on this endpoint.

Authorization

Requires update permission on the container.

Response

Returns 201 Created with the custom field resource on success.

Behavior

Uses find_or_initialize_by internally, so it creates if missing or updates if it exists
Values are validated against the definition’s data type
For enum fields, values are validated against the definition’s options

Example request

{
  "data": {
    "type": "custom_field",
    "attributes": {
      "api_slug": "customer_reference_number",
      "value": "ABC124"
    }
  }
}

Example response

{
  "data": {
    "id": "YOUR_CUSTOM_FIELD_ID",
    "type": "custom_field",
    "attributes": {
      "api_slug": "customer_reference_number",
      "value": "ABC124",
      "display_value": "ABC124"
    },
    "relationships": {
      "entity": {
        "data": {
          "id": "YOUR_CONTAINER_ID",
          "type": "container"
        }
      },
      "definition": {
        "data": {
          "id": "YOUR_DEFINITION_ID",
          "type": "custom_field_definition"
        }
      }
    }
  }
}

Tracking Requests

Shipments

Containers

Documents

Email Submissions

Document Schemas

Document Representations

Search

Webhooks

Webhook Notifications

Custom Field Definitions

Custom Field Options

Custom Fields

Shipping Lines

Metro Areas

Ports

Vessels

Terminals

Parties

Path parameters

Request body

Authorization

Response

Behavior

Example request

Example response

​Path parameters

​Request body

​Authorization

​Response

​Behavior

​Example request

​Example response

Path parameters

Request body

Authorization

Response

Behavior

Example request

Example response