Group 1 - The article provides a step-by-step guide for taxpayers on how to log in to the electronic tax bureau and apply for the reissuance of export tax refund certificates [1][2][3] - It outlines the process of selecting the type of lost certificate and retrieving relevant information such as original certificate number, issuing authority, and date [4][6] - Taxpayers can save their data, upload necessary documents, and edit details before final submission [7][8][9][11] Group 2 - The article includes instructions on how to correct or void tax declarations through the electronic tax bureau, emphasizing the importance of submitting accurate information [16][17] - It specifies that voiding a declaration is only possible within the corresponding declaration period and under certain conditions, such as not having issued payment certificates [17] - The article also mentions that corrections to corporate income tax quarterly declarations are limited to the most recent submitted quarter, with specific rules for annual reports [17]

Group 1 - The article discusses the process for travelers to issue electronic invoices (railway electronic tickets) through the railway 12306 mobile app, emphasizing the steps to replace invoices if needed [3][4] - It highlights that electronic invoices cannot be voided once issued, and if there is an error, a red invoice must be issued instead [3] - The article outlines the conditions under which a red electronic invoice can be issued, including scenarios where the buyer has or has not confirmed the purpose of the invoice [4] Group 2 - The article specifies that if the buyer has already used the electronic invoice for VAT declaration, they must adjust their input tax based on the confirmed amount until they receive the red invoice [4] - It mentions that the information regarding the issuance of red invoices is managed by the railway transportation enterprises, which must fill out a confirmation form for the process [4]