1. Customers
Fintainium APIs
  • Overview
  • Quick Start
  • Use Cases
  • Recipies
    • Connect with Vendor
    • Pay a Vendor
  • API Reference
    • AP Payouts (Accounts Payable)
      • Vendor (Recipient)
        • Create new vendor
        • Update Vendor
        • View Vendor Details
      • Payments (Payouts)
        • Initiate Payment
        • Add Payment Method
      • Bills
        • Create new Bill
      • Country State City
        • GET City List by State Name/ID/Code
    • AR Collection (Accounts Receivable)
      • Invoices
        • Create new Invoice
      • Customers
        • Create new customer
          POST
      • Payment (Collection)
        • Initiate Payment
        • Add Payment Method
    • Simplified Payouts
      • Send Payouts
    • Transactions
      • Retrieve Transaction Status
    • Webhooks
      • Register for an Event
      • Get Webhook Registration Status
    • Sub-Ledger
      • Retrieve Balance
  1. Customers

Create new customer

POST
https://staginggateway.fintainium.com/gateway/customer/create
The Create Customer API allows your business to add a new Accounts Receivable (AR) customer to the Fintainium platform. This customer can then be invoiced and included in payment collection workflows.
Key features:
Add a new AR customer with required details.
Include optional metadata to enrich customer profiles (e.g., customer ID, notes, preferences).
Integrates with Create Invoice and Initiate Payment for streamlined AR workflows.
Ensures accurate tracking and reconciliation of incoming payments.
Use this API to onboard new customers efficiently and prepare them for AR invoicing and payment collection.

Request

Header Params

Body Params text/plain
Examples

Responses

🟢200Success
application/json
Bodyapplication/json

Request Request Example
Shell
JavaScript
Java
Swift
curl --location 'https://staginggateway.fintainium.com/gateway/customer/create' \
--header 'sessionKey;' \
--header 'Content-Type: text/plain' \
--data-raw '{
    "businessId": 3295462,
    "customer":[
        {
            "companyName": "Test Customer 5",
            "vendorName": "Test Customer 5",
            "taxNo": "",
            "internalId": "123456",
            "firstName": "Test",
            "lastName": "Customer",
            "emailAddress": "Test01@getnada.com",
            "phoneNumber": "",
            "phoneNumber1": "",
            "phoneNumber2": "",
            "phoneNumber3": "",
            "phoneNumber4": "",
            "isSubCustomer": false,
            "parentCustomerId": "",
            "billWithParent": false,
            "addressLine1": "1234 XYZ Street",
            "addressLine2": "",
            "addressLine3": "",
            "addressLine4": "",
            "addressLine5": "",
            "zipCode": "12234",
            "countryCode": "US",
            "stateCode": "AK",
            "cityId": 21,
            "shipAddressLine1": "",
            "shipAddressLine2": "",
            "shipAddressLine3": "",
            "shipAddressLine4": "",
            "shipAddressLine5": "",
            "shipZipCode": "",
            "shipCountryCode": "",
            "shipStateCode": "",
            "shipCityId":"",
            "isCustomer": true,
            "isSameAsBillingAddress": true
             }
        ]
    }'
Response Response Example
[
    {
        "id": 4440158,
        "companyName": "Test Customer 5",
        "taxNo": "",
        "firstName": "Test Customer",
        "lastName": "Test Customer",
        "emailAddress": "test01@getnada.com",
        "phoneNumber": "",
        "paymentMode": "",
        "zipCode": "12234",
        "shipZipCode": "",
        "accountNumber": "",
        "businessId": 3295462,
        "businessName": "Super Coffee Co.",
        "countryCode": "US",
        "shipCountryCode": "",
        "stateCode": "AK",
        "shipStateCode": "",
        "cityId": 21,
        "shipCityId": 0,
        "isInternational": false,
        "isCustomer": true,
        "isRegistered": false,
        "isVcEnabled": false,
        "isSyncEnabled": true,
        "status": true,
        "archive": false,
        "invitationSent": false,
        "isVisaEnabled": false,
        "isSameAsBillingAddress": false,
        "createdDate": "12/17/2024",
        "errorMsg": "",
        "businessRefId": 4440156,
        "userId": 39732,
        "creditMemoAmount": 0,
        "creditMemoLastModifiedDate": "",
        "addressLine1": "1234 XYZ Street",
        "addressLine2": "",
        "addressLine3": "",
        "addressLine4": "",
        "addressLine5": "",
        "addressLine6": "",
        "shipAddressLine1": "",
        "shipAddressLine2": "",
        "shipAddressLine3": "",
        "shipAddressLine4": "",
        "shipAddressLine5": "",
        "shipAddressLine6": "",
        "printName": "",
        "internalId": "12345906",
        "vendorName": "Test Customer 5",
        "cityName": "Waverly",
        "stateName": "Alaska",
        "shipCityName": "",
        "shipStateName": "",
        "lastModifiedDate": "12/17/2024",
        "isVendorJourney": false,
        "isNewlyAdded": true,
        "addCardDetails": false,
        "skipPasswordCreation": false,
        "isSubCustomer": false,
        "billWithParent": false,
        "parentCustomerName": "",
        "isSubCustomerExists": false,
        "wireAccountName": "Test Customer 5",
        "wireAddress": "1234 XYZ Street",
        "wireAddress2": "",
        "wireZipCode": "12234",
        "wireCountryCode": "US",
        "wireStateCode": "AK",
        "wireCityId": 21,
        "autoPayEnabled": false,
        "isExcludeRecurringInvites": false,
        "maskTaxId": false,
        "phoneNumber1": "",
        "phoneNumber2": "",
        "phoneNumber3": "",
        "phoneNumber4": ""
    }
]
Modified at 2025-09-05 17:56:34
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Create new Invoice
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Initiate Payment
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