Hi there, quickbook,

QuickBooks Online lets you amend your payments entered in the system. If you're referring into the invoice payment, the following 

Are you referring to your invoice payment? If so, the following steps below will guide you through modifying it:

1. Go to the Sales tab on the left.
2. Look for the Payment against the Invoice you've created.
3. Click the Payment to open it and make the necessary changes from there.

If you're referring to the bill payment:

1. Go to the Expenses tab.
2. Look for Bill Payment or Expense.
3. Click on it to open and make corrections from there.

Feel free to leave a comment below if you're referring to something else. I'm always around to help you out.