What is the simple definition of File Validation Utility (FVU)? You can validate your e-TDS/TCS return file using the File Validation Utility (FVU). It is part of the services offered by NSDL. In accordance with prescribed formats, the FVU verifies return files generated by deductors. In this way, you will be able to submit e-TDS/TCS returns with no errors. Gen TDS software can be downloaded from the Tax Information Department's website. Gen TDS Software is used to download and generate the FVU file. The basic definition of an FVU file and some basic steps were also discussed. Please visit: https://blog.saginfotech.com/download-generate-fvu-file-gen-tds-software