How to change status of a Bill Pay uncashed check that has been cleared and reconciled?

Go to your check register and remove the check mark in the cleared column.

I'm receiving a notice from Bill Pay that a check has not been cashed.  In Quickbooks' check register the check is cleared and reconciled.  What do I need to do so that Bill Pay recognizes the correct situation and stops sending me notices?

Turns out that the check has not arrived, and, this is the condition for that situation.  This is my first encounter, using Quickbooks, with a check that was not received.  Thanks for your help!

Can someone help with this

Allow me to add information about updating the status of your bill pay that's already been cleared and reconciled.

If you need to update the status of a reconciled transaction, you can do so by going to your Chart of accounts. Rest assured that you can update the status as long as the account and amount remain unchanged.

Here's how:

1. Go to the Gear icon, then select Chart of accounts.
2. Look for the account that has the reconciled transaction. Then click View register.
3. Find the transaction. Then, click the transaction, and you'll see an R in the checkmark column
4. Click the box with the R until the box is blank. This makes the transaction removed from the reconciliation.
5. Select Save.

However, if you want to transfer the transaction to a different account, consider creating a journal entry as a discrepancy.

You can also reach out to your accountant for further guidance. If you don't have an accountant, we can help you find one. 

Furthermore, visit this article to learn how to void or delete transactions in QBO: Void or delete transactions in QuickBooks Online.

Post it in the Community if you still have concerns managing your transaction. I'll be right to help you anytime.