KDP rejected my novel three times for comp titles in the description

I submitted a thriller to KDP in three editions on the same day: Kindle, paperback, hardcover. All three got rejected within a few hours, with identical canned reasons. The actual cause was a single line of marketing copy.

What was happening

The product description ended with the standard self-published flourish: "for readers of Megan Abbott, Tana French, and Jean Hanff Korelitz." This is the conventional comp-titles framing every traditionally published thriller uses on its back cover.

KDP's content review reads that line as a potentially misleading authorship claim. They are not checking whether the comparison is reasonable. They are checking whether a customer could be confused into thinking the book is by, endorsed by, or part of a series with those authors. They reject on the side of caution, and the rejection email does not tell you which sentence triggered it. You get a generic "violates content guidelines" note and a button to appeal.

What I found

Two things were going on at once and only one of them was the real problem.

1. Comp titles in the description. This is the one that actually got me rejected. Removing the line let the appeal go through.
2. AI-content disclosure miscoded. The submission form has a separate AI disclosure checkbox with sub-options for text, images, and translation. KDP distinguishes "AI-generated" (model produced it, lightly edited) from "AI-assisted" (human-written, model used for editing/research). Mine was AI-assisted on the text. The form's wording is just ambiguous enough that you can pick wrong on a first submission. Wrong selection here is not a rejection on its own, but if you're already in an appeal it gives content review a reason to scrutinize harder.

The appeal letter that worked was four short paragraphs:

• I am the sole author of the text.
• The Abbott/French/Korelitz line was a genre/tone comparison, not an authorship claim, and has been removed.
• The cover and interior layout were generated with AI assistance and are disclosed accordingly on the AI-content question.
• The three submissions (ebook, paperback, hardcover) are the same title in three formats, not three separate works.

Submitted via the KDP appeal form from the email address registered on the account. Approval came back within two days. All three formats went live.

The fix

Description text now reads as a self-contained pitch with no named authors. The comp-titles framing lives in the author bio on my personal site, where Amazon's review system doesn't see it.

For the AI disclosure I set:

• Text: AI-assisted (not AI-generated). Used Claude for line editing, continuity checks, and structural feedback. Human wrote the prose.
• Cover and interior images: AI-generated, with prompts and human selection/composition.
• Translation: none.

What I'd do differently

Submit one format first. KDP rejects all formats on the same account when one trips a review, and you lose two to four days per round-trip. I should have done a Kindle-only first submission, cleared review, and only then queued the paperback and hardcover. The full ebook + paperback + hardcover trio is fine as a final state, but it makes the first iteration slower than it needs to be.

The other thing I'd warn anyone about: do not put your contact email on the same account you use for KDP communication. Use a dedicated alias. Their review team will only respond to the address registered with the account, and you want a clean filter rule for everything they send you.