Group 1 - The article discusses the procedures for correcting invoice selections in the tax system, emphasizing the importance of completing these actions within the reporting period to avoid overdue submissions [3][4][6] - It outlines the steps for reversing an incorrect "non-deductible selection" of invoices through the tax digital account, highlighting the need for careful handling of such selections [3][4] - The article also explains the process for reversing "export tax refund selections" depending on the status of the invoices, indicating that different actions are required based on whether the invoices have been used for tax refund applications [3][4] Group 2 - The article references tax policies related to key groups and self-employed veterans, detailing the limits and order of tax deductions for enterprises hiring these groups [9] - It mentions the exemption of value-added tax for organic fertilizer products, specifying the types of organic fertilizers that qualify for this exemption [11][12]