[Bug]: [DE] E-Document for Germany - XRechnung Export - Skip not supported document attachment (Mime Type)

[pri-kise]

Describe the issue

Currently all document attachments are added to the XRechnung xml although the mime type isn't supported according to https://docs.peppol.eu/poacc/billing/3.0/codelist/MimeCode/

Additionally the mime type is empty for the not mapped (not supported) document types.

Expected behavior

We should only export document attachments with a extension that maps to a mime type that is supported.

Steps to reproduce

Create a invoice with a not supported document type like word or txt

Additional context

See: https://docs.peppol.eu/poacc/billing/3.0/codelist/MimeCode/

I suggest to skip document attachments with not valid document type.

This issue is a follow-up to the issue #29788 where I added some tests for Document Attachment and Service

I will provide a fix for a bug

• I will provide a fix for a bug

[pri-kise]

@miljance this is how I understand the specification. Do you agree with this understanding?

A receiver of an invoice or credit note, shall accept and process attachments that are according to the code list
https://docs.peppol.eu/poacc/billing/3.0/2022-Q4/bis/#media-type

[miljance]

@pri-kise Did not stumble upon this issue so far. I think that this Bug is well defined and that XRechnung should only contain supported MIME Types. From my perspective, I think this fix is needed.

[github-actions]

This issue has been approved for contribution ✅ Thanks for contributing.