If you are looking for Xero integration please read this article.

First, we have to create a Customer Account.

The following elements are required for creating accounts.

Account Code –    Customer defined alphanumeric account code e.g 200 or SALES (max length = 10)

Account Name –   Name of Account

Type –     Bank, Current, Fixed, Sales, etc.

See many account types here

BankAccountNumber –  For bank accounts only (Account Type BANK)

BankAccountType – Bank (Creating credit card or Paypal accounts is not currently supported).

The following elements are optional for creating accounts.

Status – Accounts with a status of ACTIVE can be updated to ARCHIVED.

Description – Description of the Account. Valid for all types of bank accounts.

C# Code Example

Create the Helpers folder and make a class file namely XeroApiHelper.cs and add the code in it.

using System;
using Xero.Api.Core;
using Xero.Api.Example.Applications.Partner;
using Xero.Api.Example.Applications.Public;
using Xero.Api.Infrastructure.Interfaces;
using Xero.Api.Infrastructure.OAuth;
using Xero.Api.Example.TokenStores;
using Xero.Api.Serialization;
using System.Configuration;
namespace XeroApplication.Helpers
{
    public class ApplicationSettings
    {
        public string BaseApiUrl { get; set; }
        public Consumer Consumer { get; set; }
        public object Authenticator { get; set; }
        
    }
    public static class XeroApiHelper
    {
        private static ApplicationSettings _applicationSettings;
        static XeroApiHelper()
        {
            
            var callbackUrl = ConfigurationManager.AppSettings["callbackUrl"];
            var memoryStore = new MemoryTokenStore();
            var requestTokenStore = new MemoryTokenStore();
            var baseApiUrl = ConfigurationManager.AppSettings["baseApiUrl"];
           
              // Consumer details for Application
            var consumerKey = ConfigurationManager.AppSettings["consumerKey"];
            var consumerSecret = ConfigurationManager.AppSettings["consumerSecret"];
            // Public Application Settings
            var publicConsumer = new Consumer(consumerKey, consumerSecret);
            var publicAuthenticator = new PublicMvcAuthenticator(baseApiUrl, baseApiUrl, callbackUrl, memoryStore, 
                publicConsumer, requestTokenStore);
            var publicApplicationSettings = new ApplicationSettings
                {
                    BaseApiUrl = baseApiUrl,
                    Consumer = publicConsumer,
                    Authenticator = publicAuthenticator
                };
             _applicationSettings = publicApplicationSettings;
        }
        public static ApiUser User()
        {
            return new ApiUser { Name = Environment.MachineName };    
        }
        public static IConsumer Consumer()
        {
            return _applicationSettings.Consumer;
        }
        public static IMvcAuthenticator MvcAuthenticator()
        {
            return (IMvcAuthenticator)_applicationSettings.Authenticator;
        }
        public static IXeroCoreApi CoreApi()
        {
            if (_applicationSettings.Authenticator is IAuthenticator)
            {
                return new XeroCoreApi(_applicationSettings.BaseApiUrl, _applicationSettings.Authenticator as IAuthenticator,
                    _applicationSettings.Consumer, User(), new DefaultMapper(), new DefaultMapper());
            }
           
            return null;
        }
    }
}

Open the HomeController.cs  file and create a new method and add the below code in it.

var api = XeroApiHelper.CoreApi();
Account CreateAccount = new Account
{
    Code = "925",//uniq number
    Name = "TheCodeHubs",//uniq name for customer
    Type = Xero.Api.Core.Model.Types.AccountType.Current,
    BankAccountNumber = "456-121-1234567",//your bank account number
    BankAccountType = Xero.Api.Core.Model.Types.BankAccountType.Bank
};
api.Accounts.Create(CreateAccount);
status = "true";

You can explore API by the following URL