Hi RandikaJeewantha!

Thank you for showing interest in creating an application that will work with QuickBooks Desktop. Allow me to share some details on how to implement it.

In QuickBooks Community, we can assist and help you if you have questions or concerns about using Intuit products such as QuickBooks Online and QuickBooks Desktop. With regard to developing third-party applications, we have a separate forum for that. You can visit Developer Community or Intuit Developer page. From there, our dedicated team will be able to show you how to implement a third-party application and will provide resources.

In addition, you can click this link if you need articles or guides to any concerns you may have in using QuickBooks Desktop: QuickBooks Desktop Help Articles.

You're more than welcome to post here again if you have other questions. If you'd like to record some entries or run a few reports, let me know and I'll guide you with the process.