Hi there, Scream. If you entered an invoice that contains product or service items mapped to a bank account type, the amount will be categorized as Unapplied Cash Payment Income even if no payment has been entered or received.
To prevent this, designate your products and services to the appropriate account. You can change the income account for your items by going to Settings > Products and services > find the item > Edit > select the account you want to use in the Income account* dropdown > Save.
For a more comprehensive breakdown of this account, please refer to this resource: Unapplied Cash Payment in QuickBooks Online.
Feel free to return if you have follow-up questions.