Thank you for raising your concerns here in the Community, @Vichka. I'll share some insight about entering payment for the bills into QuickBooks Online.

What @MichelleBh provided above is about clearing a bill payment amount. And yes, you got it right. Form the given instruction above, it is simply removing or deleting the amount entered into the payment section.

The bill will be reserved and closed once the bill payment is successfully saved.

If you make errors when creating a transaction in QuickBooks Online, you'll need to void or delete it to avoid it affecting your account balances or reports. check this article for more information about void or delete transactions in QuickBooks Online.

Additionally, learn how to track bills and record payments in this link provided.

If you require any additional information regarding bills and payments, please contact us. I'll be there to assist you.