Executive summaryOn 21 March 2022, the Luxembourg Tax Authorities (LTA) announced an update to the Mandatory Disclosure Rules (MDR) XSD schema and User Guide on submitting MDR reports. Such reports are required under implementation of the European Union (EU) Directive on the mandatory disclosure and exchange of cross-border tax arrangements (referred to as DAC6 or the Directive).Going forward, the new XSD schema allows for the filing of a corrective MDR report as well as an arrangement chart.Detailed discussionIntermediaries and relevant taxpayers have two means for submitting reports to the tax authorities:Manual entry of information: The data for each individual report...