> For the complete documentation index, see [llms.txt](https://documentacao.aheadsistemas.com.br/ahead-sistemas/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentacao.aheadsistemas.com.br/ahead-sistemas/ttd/calculo-ttd/excecao-calculo-ct-e.md).

# Exceção cálculo CT-e