Group 1 - The article discusses various issues related to tax declaration and the electronic tax system, highlighting common problems users face when submitting tax-related information [1][2][3] - It emphasizes the importance of ensuring that tax identification and registration details are accurate to avoid errors during the submission process [2][3] - The article provides solutions for specific issues, such as delays in data synchronization and the need for tax type recognition by the tax authority [2][3] Group 2 - It mentions that the new electronic tax bureau currently supports tax refund applications only for the last three years, which may limit users' ability to claim older refunds [2][3] - The article outlines the necessity for users to verify their tax identification details with banks to ensure consistency and avoid validation failures [2][3] - It also addresses technical issues users may encounter, such as file format errors and data entry problems, suggesting specific software for opening CSV templates [3]