Navigate to the app details screen and check if you have entered the correct client ID. Ensure there are no spaces at the beginning or end of the client ID. You must use the Kite Connect APIs with the same client ID that you used to create the app.
If you have multiple Zerodha accounts and are logged into a different account on the browser that you're using for your OAuth-based login, this error may occur.
If you only have one Zerodha account, please navigate to the app details screen to verify that you've entered the correct client ID. Ensure there are no spaces at the beginning or end of the client ID.
I had ensured these, still no luck. Added Rs. 500 and then used the "Connect" instead of the personal still no luck. The Rs. 500 got used up for the App. Delete the App to create a new one and lost the Rs. 500 also. Now trying the "Personal" App but connect still gives the same error. Upstox was a cakewalk and no fee either !!!!!
If you only have one Zerodha account, please navigate to the app details screen to verify that you've entered the correct client ID. Ensure there are no spaces at the beginning or end of the client ID.