Every invoice in Brazil's economy runs on SOAP 1.2. We mapped it all
Researchers have catalogued every electronic invoice issued in Brazil and discovered that each one relies on the SOAP 1.2 protocol. The comprehensive mapping reveals the country's tax infrastructure is built on this legacy web service standard, highlighting challenges for developers seeking to modernize integrations. The study underscores the scale of Brazil’s invoicing network and its dependence on outdated technology.