enrollments
Submit enrollment field answer
Submits an answer for the enrollment field {field_id} on the enrollment
identified by {token}. Public — no bearer token is required; the
enrollment {token} in the path scopes the request. Returns 404 when the
enrollment or field is not found and 422 when the answer fails validation.
POST
/
api
/
checkout
/
v2026-04
/
enrollments
/
{token}
/
fields
/
{field_id}
Submit enrollment field answer
curl --request POST \
--url https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id} \
--header 'Content-Type: application/json' \
--data '
{
"answer": "<string>"
}
'import requests
url = "https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}"
payload = { "answer": "<string>" }
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({answer: '<string>'})
};
fetch('https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'answer' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}"
payload := strings.NewReader("{\n \"answer\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}")
.header("Content-Type", "application/json")
.body("{\n \"answer\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"answer\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"enrollment_field_answer": {
"form_element_id": 123,
"id": 123,
"response": "<string>"
},
"meta": {
"request_id": "<string>",
"timestamp": "2023-11-07T05:31:56Z"
}
}{
"error_message": "<string>",
"errors": "<string>",
"meta": {
"request_id": "<string>",
"timestamp": "2023-11-07T05:31:56Z"
}
}{
"error_message": "<string>",
"errors": "<string>",
"meta": {
"request_id": "<string>",
"timestamp": "2023-11-07T05:31:56Z"
}
}Body
application/json
Field answer value. Optional; the controller guard (answer_param_valid?) accepts a string or null/absent value.
⌘I
Submit enrollment field answer
curl --request POST \
--url https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id} \
--header 'Content-Type: application/json' \
--data '
{
"answer": "<string>"
}
'import requests
url = "https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}"
payload = { "answer": "<string>" }
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({answer: '<string>'})
};
fetch('https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'answer' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}"
payload := strings.NewReader("{\n \"answer\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}")
.header("Content-Type", "application/json")
.body("{\n \"answer\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.fluid.app/api/checkout/v2026-04/enrollments/{token}/fields/{field_id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"answer\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"enrollment_field_answer": {
"form_element_id": 123,
"id": 123,
"response": "<string>"
},
"meta": {
"request_id": "<string>",
"timestamp": "2023-11-07T05:31:56Z"
}
}{
"error_message": "<string>",
"errors": "<string>",
"meta": {
"request_id": "<string>",
"timestamp": "2023-11-07T05:31:56Z"
}
}{
"error_message": "<string>",
"errors": "<string>",
"meta": {
"request_id": "<string>",
"timestamp": "2023-11-07T05:31:56Z"
}
}