Thanks for following up with the Community, TUSSU.
Since you're using QuickBooks Online Accountant but aren't seeing an option to undo reconciliations, I'd initially recommend making sure you've opened your client's company file.
Here's how:
- In the toolbar, click Go to QuickBooks.
- Select your client's QuickBooks company open it.
Once you've accessed their books, go to the Accounting screen, open your Reconcile tab, then hit History by account:
- Choose an account you want to reconcile and specify a date range.
- Find the appropriate reconciliation, then press its View report option.
- Review any discrepancies/changes your client wants to make.
- Use the Drop-Down Arrow (▼) in your Action column, then click Undo.
- Select Yes, then Undo.
If you still don't see options to undo reconciliations while in your client's books, I'd recommend troubleshooting the browser you're using and confirming you meet our system requirements.
In the event there's nothing causing this with your browser and you meet each of our system requirements, but you still see no undo reconciliation options, you'll want to get in touch with our Customer Care team. They'll be able to pull up the account in a secure environment, conduct further research with you, and create an investigation ticket if necessary.
I'll be here to help if there's any questions. Have a wonderful day!