Let me ensure you'll be routed to the appropriate software development page, @Zohaib1.
There's also a community designed for developers dedicated to integrating other websites with QuickBooks. I recommend signing up and posting your question on our forum there, the Intuit Developer Community. That being said, our Intuit Developer team can provide details on how to get item categories.
Here's how:
- Login to your Intuit Developer account.
- On the Intuit Developer page, select QuickBooks Desktop.
- Choose Ask a Question.
Additionally, you might want to visit this link and ask questions about QuickBooks: Help Developer for QuickBooks Online.
Let me know if you require additional assistance with software development. I'm always here to assist. Have a good one.