Create a custom field

When the field_type is dropdown, radio, checkbox or listbox, you need to add field options using fieldOption/bulk endpoint.
A User can only see a custom field if the contact is part of a list that this custom field is related to. Use fieldRel endpoint to specify which list gets to see the custom field.

Example `POST` Body

{
	"field": {
		"type": "textarea",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"defval": "Defaut Value",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "text",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"defval": "Defaut Value",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "date",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"defval": "2019-01-01",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "dropdown",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "listbox",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "radio",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "checkbox",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "hidden",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"defval": "Defaut Value",
		"visible": 1,
		"ordernum": 1
    }
}

{
	"field": {
		"type": "datetime",
		"title": "Field Title",
		"descript": "Field description",
		"perstag": "Personalized Tag",
		"defval": "2020-05-19T02:45:00-05:00",
		"visible": 1,
		"ordernum": 1
    }
}

Example POST Body

Example `POST` Body