How to delete a Bill Plan

Summary: Our AR team created a Bill Plan active 1/1/23. They meant to delete but could not.

Content (required): Fast forward several month and the Bill Plan is still Active. There was one invoice that tried to be created and got stuck in Manage AutoInvoice Lines spreadsheet. We can't correct the invoice, we can't delete the line off and we can't delete Bill Plan. Wondering how we move forward

Version (include the version you are using, if applicable): 23A (11.13.23.01.0)

Code Snippet (add any code snippets that support your topic, if applicable):