To resolve the "validation blocked" error while generating a TDS return in BUSY, you can try the following steps:
1. Ensure that you have entered all the required information correctly, including the TDS details, deductee details, and challan details.
2. Check if there are any validation errors or missing information in the TDS return. Review the error message or notification provided by the software and make the necessary corrections.
3. Verify that you have the latest version of BUSY installed. If not, update the software to the latest version as it may contain bug fixes and improvements.