How to connect to QuickBooks online from a desktop application

Question

OK. This question has been asked a number of times and answered. However, it seems Intuit changed things on their part so:

• Their own latest documentation is no longer correct
• All the answers I found so far on the Internet no longer work

Therefore, the only option left is to ask the same question again.

I'm building a console application in C# that need to import data (invoices, customers, etc.) to QB online. It is an internal integration application that will be used by only one company. I definitely do not want to go on the SaaS route.

By all accounts it seems that I should the QuickBooks QBXML SDK v12 and should registered the application in QBOE at "www.appreg.intuit.com". However, this address no longer exists and the registration procedure has changed. QBOE currently support three types of applications:

• QuickBooks API - SaaS
• Customer Account Data API
• Payments (QBMS) App

By considering the functionality I need (create invoices etc.) I should probably create a "QuickBooks API" application. However, this is a SaaS application which is unusable to me. The "Customer Account Data API" is definitely not what I need. The only option left is the "Payments (QBMS) App" which does not seem to be the right choice either. However, this is the only one of the three application types that can be either hosted or desktop and have "AppID" and "AppLogin" attributes described in various integration articles on the Internet when using the traditional SDK.

Therefore, I created a "Payments (QBMS) App" (Desktop, Production), followed documentation and articles, did all required settings and used the traditional SDK COM objects to connect to QuickBooks.

During the first connection attempt I approved the application in my QBOE account and set the connection token. Gave all permissions to the connection with no user authentication required.

In the end all I got is the following uninformative exception thrown by the QBSessionManager.BeginSession method:

System.Runtime.InteropServices.COMException (0x80040403): Problem communicating with QuickBooks Online Edition

If I turn on log-in security a dialog appears prompting me to log-in and paste a ticket. Upon opening the log-in URL https://login.quickbooks.com/j/qbn/sdkapp/sessionauth2?serviceid=2004&appid=[AppID]

the following message appears

There is a problem with sharing your financial data between applications.
Error Message: Application [AppLogin] is not designed to work with service 2004

I also tried using qbXML directly which resulted in a "400 Bad request" error.

Is connecting to QBOE via the SDK still supported and what I'm supposed to do to achieve that?

Answer 1

Go here to create a QBOE application - http://developer.intuit.com/Application/Create/QBOE.

Answer 2

You should use traditional QBSDK.

Please refer this link - https://developer.intuit.com/docs/0025_quickbooksapi/0055_devkits/0250_qb

Thanks