How do I fix FORMAT-001?

Re-export the file from your invoicing software as a UBL 2.1 or CII D16B e-invoice. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.

Is FORMAT-001 a critical error?

Yes, FORMAT-001 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted.

Can FORMAT-001 be automatically fixed?

FORMAT-001 affects financial fields and cannot be automatically modified. This must be corrected in the source invoicing system.

Which accounting software causes FORMAT-001?

FORMAT-001 is commonly seen in exports from Software that exports proprietary XML formats instead of standard e-invoice formats, Older ERP systems without UBL 2.1 or CII D16B export capability. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Error codes · internal

FORMAT-001Partly

Unrecognized invoice format

This is the rejection, word for word: „[FORMAT-001] Your file was read successfully as XML, but it does not contain a recognized e-invoice structure. Supported formats are UBL 2.1 Invoice, UBL 2.1 CreditNote, and UN/CEFACT Cross-Industry Invoice (CII D16B). The file may have been exported in the wrong format, or it may be a different type of XML document (such as an order or dispatch advice).“

The XML root element does not match any known e-invoice namespace. Expected one of: urn:oasis:names:specification:ubl:schema:xsd:Invoice-2 (UBL Invoice), urn:oasis:names:specification:ubl:schema:xsd:CreditNote-2 (UBL CreditNote), or urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100 (CII). The validator checks the root element and its namespace to determine the invoice format before applying business rules.

What to have readyThe correct figures from your bookkeeping; we show you which field is affected.

What we doRe-export the file from your invoicing software as a UBL 2.1 or CII D16B e-invoice.

Choose the rejected invoiceor drop it here

XRechnung XML or ZUGFeRD PDF. Checking is free · corrected file €1.90 · the first every 30 days is free · no sign-up.

What the finding looks likeExample

FindingNeeds your check · FORMAT-001

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

FORMAT-002PDF must be PDF/A format XML-001Invoice file is not well-formed XML