Core Viewpoint - The article discusses the procedures and guidelines for issuing blue and red invoices in the context of electronic tax administration, emphasizing the importance of accurate information entry and compliance with tax regulations [8]. Group 1: Blue Invoice Issuance - The process for issuing blue invoices includes logging into the electronic tax bureau, selecting the appropriate options, and accurately filling in the buyer and seller information along with the vehicle identification number [4][5]. - Users are guided to choose the type of invoice from a dropdown list and must ensure that all information is filled out correctly before submitting the invoice [4][5]. Group 2: Red Invoice Issuance - The article outlines the steps for issuing red invoices, which involve logging into the electronic tax bureau, selecting the red invoice option, and confirming the details of the invoice to be redressed [6]. - It is important for users to select the reason for issuing a red invoice and to submit the confirmation details accurately [6].