/getting-started/introduction /getting-started/postman /getting-started/validation-mode /getting-started/ubl-cii-zugferd /getting-started/zugferd-compatibility /getting-started/error-codes /getting-started/llms-txt /guides/minimal-example /guides/credit-notes /guides/zugferd-pdfs /guides/custom-pdf /guides/negative-line /guides/tracing-requests /guides/self-hosting /glossary/business-terms /glossary/business-rules /release-notes/changelog / /