curl --request POST \
  --url https://api.fastcac.com/v1/registrations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "external_id": "order-1182",
  "proposed_names": [
    "Ada Foods Ventures",
    "Ada Kitchen Ventures"
  ],
  "line_of_business": "Educational Services And Consultancy",
  "business": {
    "email": "hello@adafoods.ng",
    "phone": "08031234567",
    "address": {
      "street_number": "12",
      "street": "Admiralty Way",
      "city": "Lekki",
      "lga": "Eti-Osa",
      "state": "Lagos",
      "postcode": "105102"
    }
  },
  "proprietors": [
    {
      "first_name": "Ada",
      "last_name": "Obi",
      "gender": "female",
      "date_of_birth": "1990-04-12",
      "nationality": "Nigerian",
      "nin": "12345678901",
      "email": "ada@example.com",
      "phone": "08031234567",
      "address": {
        "street_number": "12",
        "street": "Admiralty Way",
        "city": "Lekki",
        "lga": "Eti-Osa",
        "state": "Lagos",
        "postcode": "105102"
      }
    }
  ]
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    external_id: 'order-1182',
    proposed_names: ['Ada Foods Ventures', 'Ada Kitchen Ventures'],
    line_of_business: 'Educational Services And Consultancy',
    business: {
      email: 'hello@adafoods.ng',
      phone: '08031234567',
      address: {
        street_number: '12',
        street: 'Admiralty Way',
        city: 'Lekki',
        lga: 'Eti-Osa',
        state: 'Lagos',
        postcode: '105102'
      }
    },
    proprietors: [
      {
        first_name: 'Ada',
        last_name: 'Obi',
        gender: 'female',
        date_of_birth: '1990-04-12',
        nationality: 'Nigerian',
        nin: '12345678901',
        email: 'ada@example.com',
        phone: '08031234567',
        address: {
          street_number: '12',
          street: 'Admiralty Way',
          city: 'Lekki',
          lga: 'Eti-Osa',
          state: 'Lagos',
          postcode: '105102'
        }
      }
    ]
  })
};

fetch('https://api.fastcac.com/v1/registrations', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.fastcac.com/v1/registrations"

payload = {
    "external_id": "order-1182",
    "proposed_names": ["Ada Foods Ventures", "Ada Kitchen Ventures"],
    "line_of_business": "Educational Services And Consultancy",
    "business": {
        "email": "hello@adafoods.ng",
        "phone": "08031234567",
        "address": {
            "street_number": "12",
            "street": "Admiralty Way",
            "city": "Lekki",
            "lga": "Eti-Osa",
            "state": "Lagos",
            "postcode": "105102"
        }
    },
    "proprietors": [
        {
            "first_name": "Ada",
            "last_name": "Obi",
            "gender": "female",
            "date_of_birth": "1990-04-12",
            "nationality": "Nigerian",
            "nin": "12345678901",
            "email": "ada@example.com",
            "phone": "08031234567",
            "address": {
                "street_number": "12",
                "street": "Admiralty Way",
                "city": "Lekki",
                "lga": "Eti-Osa",
                "state": "Lagos",
                "postcode": "105102"
            }
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.fastcac.com/v1/registrations"

	payload := strings.NewReader("{\n  \"external_id\": \"order-1182\",\n  \"proposed_names\": [\n    \"Ada Foods Ventures\",\n    \"Ada Kitchen Ventures\"\n  ],\n  \"line_of_business\": \"Educational Services And Consultancy\",\n  \"business\": {\n    \"email\": \"hello@adafoods.ng\",\n    \"phone\": \"08031234567\",\n    \"address\": {\n      \"street_number\": \"12\",\n      \"street\": \"Admiralty Way\",\n      \"city\": \"Lekki\",\n      \"lga\": \"Eti-Osa\",\n      \"state\": \"Lagos\",\n      \"postcode\": \"105102\"\n    }\n  },\n  \"proprietors\": [\n    {\n      \"first_name\": \"Ada\",\n      \"last_name\": \"Obi\",\n      \"gender\": \"female\",\n      \"date_of_birth\": \"1990-04-12\",\n      \"nationality\": \"Nigerian\",\n      \"nin\": \"12345678901\",\n      \"email\": \"ada@example.com\",\n      \"phone\": \"08031234567\",\n      \"address\": {\n        \"street_number\": \"12\",\n        \"street\": \"Admiralty Way\",\n        \"city\": \"Lekki\",\n        \"lga\": \"Eti-Osa\",\n        \"state\": \"Lagos\",\n        \"postcode\": \"105102\"\n      }\n    }\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	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))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fastcac.com/v1/registrations",
  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([
    'external_id' => 'order-1182',
    'proposed_names' => [
        'Ada Foods Ventures',
        'Ada Kitchen Ventures'
    ],
    'line_of_business' => 'Educational Services And Consultancy',
    'business' => [
        'email' => 'hello@adafoods.ng',
        'phone' => '08031234567',
        'address' => [
                'street_number' => '12',
                'street' => 'Admiralty Way',
                'city' => 'Lekki',
                'lga' => 'Eti-Osa',
                'state' => 'Lagos',
                'postcode' => '105102'
        ]
    ],
    'proprietors' => [
        [
                'first_name' => 'Ada',
                'last_name' => 'Obi',
                'gender' => 'female',
                'date_of_birth' => '1990-04-12',
                'nationality' => 'Nigerian',
                'nin' => '12345678901',
                'email' => 'ada@example.com',
                'phone' => '08031234567',
                'address' => [
                                'street_number' => '12',
                                'street' => 'Admiralty Way',
                                'city' => 'Lekki',
                                'lga' => 'Eti-Osa',
                                'state' => 'Lagos',
                                'postcode' => '105102'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

{
  "object": "registration",
  "id": "reg_4kMzPP2CrSMnY18kiANzau",
  "business_id": "biz_68mJv5UBBIPdMGYTvhnrKG",
  "external_id": "order-1182",
  "type": "business_name",
  "status": "draft",
  "proposed_names": [
    "ADA FOODS VENTURES",
    "ADA KITCHEN VENTURES"
  ],
  "line_of_business": "Educational Services And Consultancy",
  "business": {
    "email": "hello@adafoods.ng",
    "phone": "08031234567",
    "address": {
      "street_number": "12",
      "street": "Admiralty Way",
      "city": "Lekki",
      "lga": "Eti-Osa",
      "state": "Lagos",
      "postcode": "105102"
    }
  },
  "proprietors": [
    {
      "first_name": "Ada",
      "last_name": "Obi",
      "other_names": null,
      "gender": "female",
      "date_of_birth": "1990-04-12",
      "nationality": "Nigerian",
      "nin": "12345678901",
      "email": "ada@example.com",
      "phone": "08031234567",
      "address": {
        "street_number": "12",
        "street": "Admiralty Way",
        "city": "Lekki",
        "lga": "Eti-Osa",
        "state": "Lagos",
        "postcode": "105102"
      }
    }
  ],
  "missing_fields": [],
  "query": null,
  "failure": null,
  "registered_name": null,
  "registration_number": null,
  "certificate_available": false,
  "status_report_available": false,
  "history": [
    {
      "from": null,
      "to": "draft",
      "at": "2026-10-23T22:17:57Z"
    }
  ],
  "submitted_at": null,
  "approved_at": null,
  "created_at": "2026-10-23T22:17:57Z",
  "updated_at": "2026-10-23T22:17:57Z"
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_missing",
    "message": "Send your API key as `Authorization: Bearer <key>`.",
    "param": null,
    "request_id": "req_kdwpKsFMKS4VzLjqZJ0ntdrl"
  }
}

{
  "error": {
    "type": "permission_error",
    "code": "live_mode_unavailable",
    "message": "Live registrations aren't open yet. Use a test key (fc_test_…) for now.",
    "param": null,
    "request_id": "req_oYVCIHqeYbgIA3lIzwG0PO5r"
  }
}

{
  "error": {
    "type": "not_found_error",
    "code": "resource_missing",
    "message": "No such registration: reg_0000000000000000000000.",
    "param": "id",
    "request_id": "req_RlcFqswqrJZos4pnRMH3wa8d"
  }
}

{
  "error": {
    "type": "idempotency_error",
    "code": "idempotency_key_reused",
    "message": "This Idempotency-Key was used for a different request.",
    "param": null,
    "request_id": "req_rMDN34jrxS4pDxoiY3on5Flb"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>"
  }
}