KDP error: Barcode / ISBN placement on the cover
Where the ISBN barcode must sit on a KDP cover, the clear-zone size that triggers rejection, and how to fix your cover file in a single pass.
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Rejection
Expert articles on KDP formatting, self-publishing, and book design for UK authors. 29 guides and counting.
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KDP Formatting
29 articlesKDP error: PDF won't upload or convert correctly
Why your interior or cover PDF fails to upload or convert on KDP — embedded fonts, bleed mismatch, file size, security settings — and the exact fix. UK-specific, 2026 spec.
KDP page-count rules: minimum, maximum, and even pages
KDP's minimum and maximum page counts for paperback and hardcover — by ink and paper type — plus whether you need an even page count. UK-specific, 2026 spec.
KDP error: AI-generated content not disclosed
Why KDP rejected your book for failing to disclose AI-generated content — and the exact fix. UK-specific, 2026 spec.
KDP error: Blank chapter detected
Why KDP rejected your book for a blank chapter — and the exact fix. UK-specific, 2026 spec.
KDP error: Bleed misconfigured for your trim size
Why KDP rejected your book for incorrect bleed — and the exact fix. UK-specific, 2026 spec.
KDP error: Cover dimensions don't match interior trim
Why KDP rejected your book for cover-interior trim mismatch — and the exact fix. UK-specific, 2026 spec.
KDP error: Cover text or critical elements in bleed zone
Why KDP rejected your cover for text in the bleed zone — and the exact fix. UK-specific, 2026 spec.
KDP error: Cover under 2560×1600 pixels
Why KDP rejected your ebook cover for being too small — and the exact fix. UK-specific, 2026 spec.
KDP error: Crop marks present in print PDF
Why KDP rejected your PDF for crop marks — and the exact fix. UK-specific, 2026 spec.
KDP error: Embedded image too large
Why KDP rejected your file for an oversized embedded image — and the exact fix. UK-specific, 2026 spec.
KDP error: EPUB doesn't pass EPUBCheck validation
Why KDP rejected your Kindle file for EPUB validation errors — and the exact fix. UK-specific, 2026 spec.
KDP error: Fewer than 24 pages (paperback minimum)
Why KDP rejected your paperback for being too short — and the exact fix. UK-specific, 2026 spec.
KDP error: File size over 650MB
Why KDP rejected your upload for exceeding the file size limit — and the exact fix. UK-specific, 2026 spec.
KDP error: Fixed-layout metadata missing for picture book
Why KDP rejected your picture book or comic for missing fixed-layout flags — and the exact fix. UK-specific, 2026 spec.
KDP error: Font not embedded in PDF
Why KDP rejects PDFs for non-embedded fonts, how to find which font is missing, and the export settings that fix it in Word, InDesign and Atticus.
KDP error: Image resolution below 300 DPI
Why KDP rejected your book for low-resolution images — and the exact fix. UK-specific, 2026 spec.
KDP error: ISBN on copyright page doesn't match metadata
KDP rejected your book for an ISBN mismatch between cover and metadata. Exactly which field is wrong, and how to fix and resubmit in minutes.
KDP error: Lorem ipsum or placeholder text detected
Why KDP rejected your book for placeholder text — and the exact fix. UK-specific, 2026 spec.
KDP error: Margin too small (gutter or outside)
Why KDP rejected your book for a margin violation — and the exact fix. UK-specific, 2026 spec.
KDP error: More than 828 pages (paperback maximum)
Why KDP rejected your paperback for exceeding the page limit — and the exact fix. UK-specific, 2026 spec.
KDP error: Odd page count in print interior
Why KDP rejected your paperback for an odd page count — and the exact fix. UK-specific, 2026 spec.
KDP error: PDF transparency layers not flattened
Why KDP rejected your PDF for unflattened transparency — and the exact fix. UK-specific, 2026 spec.
KDP error: RGB images in print interior (CMYK required)
Why KDP rejected your print PDF for mixed colour spaces — and the exact fix. UK-specific, 2026 spec.
KDP error: Right-to-left language flag missing in OPF
Why KDP rejected your Arabic, Hebrew or Persian book for missing RTL flags — and the exact fix. UK-specific, 2026 spec.
KDP error: Spine too narrow for spine text
Why KDP rejected your cover for spine text on a too-thin book — and the exact fix. UK-specific, 2026 spec.
KDP error: Table of Contents links don't resolve
Why KDP rejected your ebook for a broken Table of Contents — and the exact fix. UK-specific, 2026 spec.
KDP error: Title on cover doesn't match dashboard metadata
Your cover title doesn't match your dashboard metadata. The exact fields KDP compares, the subtitle trap that catches most authors, and the fix.
KDP Rejection Reasons: The 15 Most Common, Fixed (Interactive Tool)
The 15 most common KDP rejection reasons and how to fix each one — an interactive tool: pick your reason, get the step-by-step fix. Margins, cover, ISBN, fonts and more.