Create attendee type custom field

post

https://connect.eventtia.com/api/v4/events/{uuid}/attendee-types/{attendee_type_id}/custom-fields

Creates a new custom field on an attendee type. Required: name, input_type.

Multiple-choice inputs (select, checkbox, radio) require values
as a JSON array. Each value must be a non-empty string without commas (the
legacy storage uses comma-separated serialization).

terms_conditions input requires terms_url. File uploads are not
supported via API — the server always forces terms_mode=url.

Default fields cannot be created via this endpoint (they are auto-created
with the AttendeeType).

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Path Params

uuid

required

Event public UUID (api_key). Used in all event-scoped API paths.

attendee_type_id

integer

required

Attendee type numeric ID.

Body Params

Body schema for creating/updating an AttendeeTypeCustomField. The exact set of
relevant properties depends on input_type — unused properties are ignored.

input_type-specific notes:

text_field: max_chars, format_validator, value_limited, lower_bound, upper_bound, show_when_checked_in
text_area: max_chars, show_when_checked_in
select / checkbox / radio: values (array, required), allow_duplicate_values, filterable, use_select_tag, use_radio_buttons, min_selected_options, max_selected_options
datetime: include_time, lower_bound, upper_bound
terms_conditions: terms_url (required) — file uploads not supported via API
label: use_as_header
Default birthdate field: min_age

Defaults: built-in default fields (e.g. first_name, email, birthdate) are auto-created with the AttendeeType. They cannot be created via this API; updates on them are restricted by the model (only required, display, and a few field-specific options).

name

string

required

input_type

string

enum

required

boolean

display

boolean

edit_admin_only

boolean

available_public_listings

boolean

internal_id

string

^[a-zA-Z0-9-]+$

values

array of strings

Allowed choices for select, checkbox, radio. Comma characters inside individual values are not supported.

values

allow_duplicate_values

boolean

filterable

boolean

use_select_tag

boolean

Render checkbox as select tag (UI hint).

use_radio_buttons

boolean

Render select as radio buttons (UI hint).

min_selected_options

integer

max_selected_options

integer

max_chars

integer

format_validator

integer

enum

Validator constant: 1=value_limited, 2=num, 3=alpha, 4=tel, 5=chilean_rut, 6=age_limited.

Allowed:

value_limited

integer

enum

Allowed:

lower_bound

Numeric (text_field with value_limited) or datetime string (datetime input).

upper_bound

include_time

boolean

For datetime inputs.

terms_url

uri

Required when input_type=terms_conditions. Server forces terms_mode=url.

use_as_header

boolean

For label inputs.

show_when_checked_in

boolean

For text_field / text_area.

min_age

integer

Minimum age, only meaningful for the default birthdate field.

Responses

200custom field created

401unauthorized

404attendee type not found

422validation failed

429rate limit exceeded

500internal server error