Helper: https://github.com/ROMOPAT/easybill-php-helper

• https://soap.easybill.de/soap.easybill.php?wsdl
• https://soap.easybill.de/wsdl/soap.customer.xsd
• https://soap.easybill.de/wsdl/soap.document.xsd
• https://soap.easybill.de/wsdl/soap.companyposition.xsd

Beispielcode: http://www.easybill.de/blog/index.php/tag/rechnungssystem-shop/