$ curl https://api.intercom.io/data_attributes \\-X POST \\-H 'Authorization:Bearer <Your access token>' \\-H 'Accept: application/json' \\-H 'Content-Type: application/json' -d{  \"name\": \"list_cda\",  \"description\": \"You are either alive or dead\",  \"data_type\": \"options\",  \"company\": false,  \"options\": [    {\"value\": \"alive\"},    {\"value\": \"dead\"}  ]}HTTP/1.1 400 BAD REQUEST
{
  "type": "error.list",
  "request_id": "0006klvnje6ffng7ot80",
  "errors": [
    {
      "code": "parameter_invalid",
      "message": "You already have 'text_cda' in your people data. To save this as new company data, use a different name."
    }
  ]
}HTTP/1.1 400 BAD REQUEST
{
  "type": "error.list",
  "request_id": "0000rnvpf3m1f3nf4k40",
  "errors": [
    {
      "code": "parameter_invalid",
      "message": "Your name for this attribute must only contain alphanumeric characters, currency symbols, and hyphens"
    }
  ]
}HTTP/1.1 400 BAD REQUEST
{
  "type": "error.list",
  "request_id": "0000rnvpf3m1f3nf4k40",
  "errors": [
    {
      "code": "parameter_invalid",
      "message": "'Name' is one of our standard attributes for your people data. To save this as new people data, use a different name."
    }
  ]
}HTTP/1.1 400 BAD REQUEST
{
  "type": "error.list",
  "request_id": "0000rnvpf3m1f3nf4k40",
  "errors": [
    {
      "code": "parameter_invalid",
      "message": "Data Type isn't an option"
    }
  ]
}HTTP/1.1 400 BAD REQUEST
{
  "type": "error.list",
  "request_id": "0000rnvpf3m1f3nf4k40",
  "errors": [
    {
      "code": "parameter_invalid",
      "message": "You must have at least two options on a list type data attribute"
    }
  ]
}You can create a data attributes for a contact or a company.
| Attribute | Type | Description | 
|---|---|---|
| name | string | The name of the attribute. | 
| model | string | The model where the attribute applies to.  Accepts contact or company . | 
| data_type | string | The type of data stored for this attribute.  Accepted values are string, integer, float, boolean, date, options. | 
| description | string | (Optional) The readable description you see in the UI for the attribute. | 
| options | array | (Optional) Array of objects representing the options of the list, with value as the key and the option as the value. At least two options are required. data_type must be options. | 
| messenger_writable | boolean | (Optional). When set to false, the attribute will not be writable by the Messenger. Default value is true. | 
This will return a Data Attribute Model showing the details of your created attribute.