Error with authenticating.The scope query parameter is missing from the authorization request.

Hello there, wasif-happytenan.

If you're integrating a third-party application in QuickBooks Online (QBO), I suggest reaching out to your third-party app provider to assist you further with the integration process.

If this isn't the case, can you please share additional information on what you're trying to achieve with the QBO program? This way, I can provide you with the best resolution.

I'd appreciate any additional details you can provide. I’m looking forward to your reply. Have a great rest of the day.