--- title: "Reviewer issues" slug: "reviewer-issues" updated: 2026-10-29T05:32:58Z published: 2026-10-29T05:32:58Z canonical: "docs.document360.com/reviewer-issues" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.document360.com/llms.txt > Use this file to discover all available pages before exploring further. # Reviewer issues This article covers issues you might run into as a Reviewer in Document360, such as missing inline comment options. Each section explains why the issue happens and how to fix it. --- ## CSV header errors during import **Error**: Invalid CSV headers. Please ensure the column names match the expected format. This error occurs when the uploaded CSV file does not have the required column headers or if the headers are misspelled, missing, or incorrectly formatted. **Steps to resolve**: 1. Open the CSV file using a spreadsheet editor (e.g., Excel). 2. Check the first row and ensure it contains the correct column headers, namely **Email**, **FirstName**, and **LastName**. 3. Remove any extra spaces, special characters, or typos in the header names. 4. Save the file in CSV format after making corrections. 5. On the error screen, click the **Replace** button and upload the corrected file. 6. Try the import again. 7. If the issue persists after following these steps, please contact the Document360 support team for further assistance: [Contact Document360 Support](https://document360.com/support/) ![Image showing error while importing a team account](https://cdn.document360.io/860f9f88-412e-4570-8222-d5bf2f4b7dd1/Images/Documentation/image-1767336621019.png) --- ### FAQ #### Why can't a Reviewer add inline comments? Inline comments are only available after the Reviewer clicks the **Start Review** button at the top right of the editor. If this step is skipped, the option to add comments will not appear.