I have just the steps you'll need to apply a Credit Memo to a Recurring Invoice. The process works the same regardless of whether or not the invoice is recurring. Here's how you can achieve this:
Create and Apply a Credit Memo
I'm including a link to our thorough guide on creating and applying credit memos that I'm sure you'll find helpful. The video tutorial below can also offer more information:
With these resources, you can create and apply credits to recurring invoices with ease. Please touch base with me here should you need any additional assistance, I'm always up to talk QuickBooks. Thanks for coming to the Community and take care.