Error Database
Select an error code for detailed remediation instructions.
Seller VAT ID Missing (BT-31)
The seller's VAT identification number (Umsatzsteuer-Identifikationsnummer) must be provided in Business Term BT-31.
Buyer Reference Missing (BT-10)
A buyer reference (Leitweg-ID) is required in BT-10 for all invoices sent to German public sector entities.
Seller Contact Telephone Missing (BT-42)
The seller's contact telephone number (BT-42) should be provided.
Seller Contact Email Missing (BT-43)
The seller's contact email (BT-43) should be provided.
Seller Contact Name Missing (BT-41)
The seller's contact person name (BT-41) is expected in German invoices.
Sum of Line Net Amounts Mismatch
The sum of all InvoiceLine net amounts must equal the Invoice total net amount (BT-106).
VAT Calculation Error
The invoice total VAT amount must equal the sum of all VAT category tax amounts.
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