Recently, when I was trying to Unapply a credit in QuickBooks to settle the overpayments, I failed to do the same. After trying several troubleshooting steps on the support page I wasn’t able to get rid of this issue. However, to fix the issue, I browsed on various other websites and I came across a file named Unapply a credit in QuickBooks that helped me to deal with this issue. You can also click on this article to get the stepwise instructions to do the same. If you have any other suggestions regarding the issue, you can also share with us.