Hi there, prasanth1.

I'll provide a different scenario to stop the auto-suggestion option.

QuickBooks Online can automatically apply payments to invoices and bills. If you're referring to stop these options, you'll need to turn these off from Account and Settings.

Here's how:

1. Click the Gear icon, and then select Account and Settings.
2. Go to the Advanced tab.
3. Click the edit (pencil) icon on the Automation field.
4. Remove the checkmarks in the Automatically apply credits and Automatically apply bill payments boxes.
5. Hit Save and Done.

If you're referring to stop the auto-match in the banking transactions, there isn't an option to turn off this feature in the bank feeds. QuickBooks tries to match if the bank feeds and the transactions that you've manually entered in the QuickBooks have the same pieces of information (ex. check numbers, amounts, dates, and payees).

You have the option to review the matches before adding them to the register. You can check this article that'll provide you more details: Categorise and match online bank transactions in QuickBooks Online.

You can also refer to this article for some tutorials about the use of the different features in QuickBooks Online: QuickBooks Tutorials.

If there is anything else we can do for you, please don’t hesitate to let us know.