After entering credits for your customers in QuickBooks, it is necessary to apply those credits to your customers invoices.
QuickBooks 2013 and later
Note: You will see the available credit amount at the bottom of the window.
Note: In this scenario, credits available to a parent customer will not display if you try to apply them to specific jobs. If you need to apply credit to multiples jobs, please see Transfer a credit from one job to another job under the same customer.
Accountant Edition only: Utilize the Client Data Review tool to fix unapplied customer payments and credits.