Today, April 7th, 2022, version 2.5.0 of the open source e-invoicing tool Mustangproject has been released. It adds support for Factur-X 22.214.171.124/ZUGFeRD 2.2 fixing various issues e.g. in the validation of electronic invoices. Additionally, it adds support for two industry recommendation, namely for the german railway industry (issue #253) and french B2G invoices vis á vis Chorus Pro, allowing to specify legalorganisation ID and scheme ID, which is one of the few Chorus Pro mandatory requirements. Additional fixes and changes are also mentioned in the project’s history file.