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Fixing KDP Errors: A Troubleshooting Guide for Authors
You’ve reached the final step of your publishing journey: uploading your book to KDP. You hold your breath, click “Publish,” and then… a dreaded error message appears. Or, you open the KDP Previewer and find your book’s interior is a mess of strange spacing and broken images. These KDP errors are a frustrating but common part of the process for many first-time authors.
The good news is that nearly every KDP error is fixable. They are almost always technical issues related to your manuscript or cover files. This guide will walk you through the most common KDP errors and, more importantly, how to fix them.
Key Takeaways & Summary
- Two Types of Errors: KDP errors fall into two categories: Rejection Errors (technical issues that prevent you from publishing) and Formatting Glitches (errors that look bad to the reader, even if KDP accepts the file).
- The Cover is a Common Culprit: For print books, the most common rejection errors are related to an incorrectly sized cover file.
- The Root Cause is Your Source File: Most interior formatting glitches are caused by “dirty” manual formatting in your original Word document.
- The Fix is Always in the Source: You cannot fix errors within the KDP system. You must always go back to your original source files (your Word doc, cover design file, etc.), fix the problem there, and re-upload.
Fixing Common KDP Rejection Errors
These are errors that will cause KDP’s system to reject your file during the upload or review process.
Paperback Cover Errors
This is the #1 cause of rejection for print books.
The Error: “Your cover file is the wrong size,” or “The spine width is incorrect.”
The Cause: Your cover designer did not create the file with the exact dimensions required for your book’s specific trim size and final page count.
The Fix: You must use the official KDP Cover Calculator to generate a precise template. Provide this template to your designer and have them refit your design to its exact dimensions, including the correct spine width and bleed lines.
Interior File Errors
The Error: “Your interior contains low-resolution images,” or “The text in your interior is outside the margins.”
The Cause: The images in your manuscript are below the required 300 DPI, or your page margins are set incorrectly for your chosen trim size.
The Fix: Replace any low-resolution images with high-quality versions. For margin errors, you must go back to your source file and adjust the page setup to match KDP’s required margins, including the “gutter.”
Fixing Common Formatting Glitches in the KDP Previewer
These are errors that might not get your book rejected but will create a terrible reader experience.
The Problem: You see inconsistent paragraph indents, weird spacing between lines, a non-clickable Table of Contents, or images that are too small.
The Cause: These issues are almost always caused by manual formatting in your original Word document (using the Tab key, hitting “Enter” multiple times, etc.).
The Fix (The Golden Rule): The only reliable way to fix this is to go back to your source manuscript and clean it. You must strip out all manual formatting and use automated Paragraph Styles for everything. This professional standard is a core principle of responsible publishing, as advocated by author organizations like the Alliance of Independent Authors (ALLi). For a guaranteed clean result, a professional formatting service is the best solution. Our book formatting services specialize in creating flawless files for KDP.
The Process: How to Fix and Re-upload Your Files
Identify the Error: Read the KDP error message carefully or note the specific problem in the previewer.
Go Back to Your Source File: Open your original file (the Word DOCX, the Adobe InDesign file, the Photoshop file for your cover, etc.). Do not try to edit the final PDF or EPUB.
Fix the Problem: Correct the specific issue (e.g., resize an image, adjust the margins, apply the correct paragraph style).
Export a New Final File: Save or export a brand new, clean version of your EPUB or PDF.
Re-upload to KDP: Go back to your KDP Bookshelf, go to your book’s “Content” tab, and upload the new, corrected file over the old one.
This entire process is a core part of our Amazon KDP publishing services, as we ensure every file is perfect before the first upload.
Short FAQ
Q: What does “bleed” mean in a KDP error message?
A: “Bleed” is a printing term. If you have images or colors that you want to go all the way to the edge of the page, your interior and cover files must extend 0.125 inches beyond the final trim line. If your file doesn’t have this, but you check the “bleed” box in KDP, you will get an error.
Q: KDP says my cover is blurry. How do I fix that?
A: This means your cover file has a resolution below the required 300 DPI (Dots Per Inch). You need to get a new, high-resolution version from your designer. You cannot simply “increase” the resolution of a low-quality file; it must be exported correctly from the original design source.
Q: I found a typo after I published. How do I fix it?
A: You follow the same process. Fix the typo in your source manuscript, generate a new EPUB or PDF file, and re-upload it to your KDP Bookshelf. The updated version will replace the old one on the Amazon store within a few days.
