I deleted a previously reconciled expense item and my reconciliation is erroring out

Re-enter the item in the Checkbook Register (or Credit Card, etc.) with the appropriate Expense Acct, Date, etc.

Then pull up last months Statement and Reconcile again with that Date, Amount, etc.  You should see the one item you just entered and when you check it off you should again have a $0 balance and be Reconciled.  (Obviously you want to ignore all the other items that will be on the next months statement.)

Hello there, Jonathan.

Are you getting the "Your account isn't ready to reconcile yet" error message? If so, there are a few ways to fix this.

Since you mentioned you've deleted an expense, you'll need to recreate it as exactly as it appears on your discrepancy report. Here's how:

1. In QuickBooks Online (QBO), go to the + New option at the top left.
2. Select Expense.
3. Enter the necessary information in the desired fields. You can use the Audit Log to get the details of the deleted transaction.
4. Click Save and close.

Once done, proceed to the register and manually mark it as reconciled (R). Here's how:

1. In QBO, go to the Bookkeeping or Accounting.
2. Proceed to the Chart of Accounts tab.
3. Locate the account that you put the expense into and select View register.
4. Find the transaction and tick it to expand the view.
5. Click the box in the checkmark column until you see an R. This manually reconciles the transaction.
6. Hit Save. If you still see an alert the next time you reconcile, open the discrepancy report. The deleted transaction may still be on the list, but the difference should be $0.00. It won't affect your reconciliation.

After you review everything on the discrepancy report, the Total Discrepancy Difference on the report should be US $0.00. Check the beginning balance again in QuickBooks. It should match the beginning balance on your bank statement. Select Resume reconciling to continue reconciling.

To learn more about managing and fixing reconciliation issues in QBO, check out this article: Fix issues for accounts you've reconciled in the past in QuickBooks Online.

In case you want to undo reconciliation in the future, refer to this article for further guidance: Undo or remove transactions from reconciliations in QuickBooks Online.

Please let me know if you have more questions about this or anything else. I'll be here to assist. Take care.