---
title: "Quittio\\Core\\Reading – API-Referenz"
description: "The public classes in Quittio\\Core\\Reading."
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> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api)

# Quittio\\Core\\Reading

## quittio/core \#

### [Quittio\\Core\\Reading](https://quittio.dev/docs/api/Quittio/Core/Reading)

- [`DeclaredExemptionReasons`](https://quittio.dev/docs/api/Quittio/Core/Reading/DeclaredExemptionReasons)EN 16931 carries the VAT exemption reason (BT-120, BT-121) only on the VAT breakdown, the data model takes it from the lines (LineVat) and document allowances and charges. Readers copy the declared reasons back, so that a recalculation keeps them.
- [`DiagnosingXmlExtractor`](https://quittio.dev/docs/api/Quittio/Core/Reading/DiagnosingXmlExtractor) interfaceAn extractor that also reports where the XML came from and what it noticed on the way.
- [`EmbeddedXmlExtractor`](https://quittio.dev/docs/api/Quittio/Core/Reading/EmbeddedXmlExtractor) interfaceExtracts the embedded invoice XML from a hybrid PDF (ZUGFeRD/Factur-X, XRechnung in PDF).
- [`ExtractedXml`](https://quittio.dev/docs/api/Quittio/Core/Reading/ExtractedXml)The invoice XML found in a hybrid PDF, with the file specification it came from.
- [`FormatReader`](https://quittio.dev/docs/api/Quittio/Core/Reading/FormatReader) interfaceReads one XML invoice format into the data model.
- [`InvoiceReader`](https://quittio.dev/docs/api/Quittio/Core/Reading/InvoiceReader)Reads e-invoices from XML or PDF.
- [`ReadResult`](https://quittio.dev/docs/api/Quittio/Core/Reading/ReadResult)Result of reading an e-invoice: the parsed data, the totals declared in the document (kept unchanged for comparison), findings and the raw input.
- [`UnreadableInvoiceException`](https://quittio.dev/docs/api/Quittio/Core/Reading/UnreadableInvoiceException)The input is not a supported e-invoice.

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