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BR-DE-2BG-6
input
The seller contact is missing
The `SELLER CONTACT` group (BG-6) must be provided.
Only the issuer holds this value: Factlint reports it and never fabricates it. Test your invoice to find out whether it is affected.
Why this error happens
XRechnung wants an invoice to name someone reachable at the seller. The group carries three elements, each checked by its own rule — BR-DE-5, BR-DE-6 and BR-DE-7; this finding says the whole group is absent, so the other three follow it.
How to fix it
Add the contact to your seller record. Factlint reports it as `needs_input` and never fabricates a default value.