Guide · Ilia IsakovJuly 20266 minGuides · E-invoicing · Verified July 13, 2026

E-invoice rejected:
the causes and the lasting fix .

The eleven most frequent rejection reasons for German e-invoices (XRechnung/ZUGFeRD), each verified against the official validation rules, and why the lasting fix lives in the process, not in the single invoice.

11verified rejection causes

1 ctrounding gap is enough

BR-DEstricter German rules

1xfix the pipeline, not invoices

Rejections are process findings, not bad luck.

German e-invoices are validated automatically against the EN 16931 business rules plus the stricter German BR-DE rules. The most frequent rejections: missing buyer reference (Leitweg-ID in B2G), incomplete seller contact data, one-cent rounding mismatches, wrong VAT breakdown, malformed cash-discount terms, free-text unit codes, disallowed attachment formats.

Correct the pipeline, not each invoice.

Every one of these causes lives in master data or in the invoicing process itself. Fixing the pipeline once, from order data to a dispatched, validated e-invoice, removes the whole error class. That is exactly what we build and then operate.

Next step

Tell us how your invoices are created.

Five sentences, from service record to dispatch. You get an honest assessment of what keeps getting rejected and what the rebuilt pipeline looks like. Entry is a pilot from 1,500 €, credited in full.

Talk to us E-invoicing mandate