It's nice to see you here in the Community, @luka-broz.
I'd like to make sure you'll get pointed in the right direction so you'll be able to create a project in QBO using the project API successfully.
To help you in utilizing the project API in QuickBooks Online, I highly suggest contacting our Intuit Developer. This team is the best resource for such concerns as they are the experts on how to enable the API to access the production QuickBooks Online companies.
You can contact them through this link attached: Intuit Developer.
I'm also adding here some articles that can guide you in managing projects and its reports in QuickBooks Online:
Know that I'm just a reply away if there's anything else that I can assist you with. Thanks for coming, and have a nice day!
Thanks for chiming in to this API discussion, @justshowmethedamnarticle.
We wanted to make sure you're able to use the features in our program. Have you tried the suggestions shared by
BettyJaneB, to get in touch with our developers forum?
The Intuit Developers Community is the best department to ask help and get answers with API questions, especially regarding your concern. This forum is specialized for general QuickBooks concerns and processes.
Fiat Lux - ASIA also share helpful links that you might want to consider using.
Kindly post here again if there's anything else you need help with. We're always here to help you out. Have a good one!
Hello there, @harkyal.
I can see that you posted the same question twice. I just wanted to let you know that my colleague responded to your other post. To keep the conversation streamlined and provide you with the best resolution, I'll ask that you post any follow-ups there. Here's the link: https://quickbooks.intuit.com/learn-support/en-us/other-questions/re-quickbooks-api-for-projects/01/...
If you ever have any other questions we can help you with, feel free to drop by the Community. Have a great day.