To add on, descoring is only legal if the caps fall back into the field illegal if the caps fall out of the field. Strategic, intentional, or repeated removal of caps from the field would be a violation of <SG8>.
Edit: My bad, ammended to reflect the reply below
Not exactly. De-scoring caps is only illegal if you’re sending the caps out of the field. There is no requirement that they fall back onto the field. For example, you could pick them up and hold them.
To say this in one sentence; You can descore caps, but they can’t leave the playing field.
Or how about referring the poster the Official Q&A answer