Mitra Zarei When encountering issues with importing a thesaurus file into VOSviewer and receiving an error message indicating that a specific column header is not valid, there are several steps you can take to troubleshoot and resolve the problem. Here's a step-by-step guide to help you address this issue:

By following these steps, you can effectively address the issue of the thesaurus file containing invalid column headers and ensure a smooth and error-free importation process in VOSviewer. Making necessary adjustments to the file structure and adhering to the specified formatting requirements will help you successfully utilize the thesaurus file for further analysis and visualization within VOSviewer.